Most Recent Weekly Report: 25 September-1 October 2024 Cite this Report

Kamchatkan Volcanic Eruption Response Team (KVERT) reported that during 19-26 September lava extrusion likely continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at the dome at Young Sheveluch. Daily thermal anomalies over the domes were identified in satellite images. Plumes of resuspended ash drifted 1,500 km E during 25-26 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Most Recent Bulletin Report: May 2023 (BGVN 48:05) Cite this Report

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25 September-1 October 2024 Cite this Report

Kamchatkan Volcanic Eruption Response Team (KVERT) reported that during 19-26 September lava extrusion likely continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at the dome at Young Sheveluch. Daily thermal anomalies over the domes were identified in satellite images. Plumes of resuspended ash drifted 1,500 km E during 25-26 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 September-24 September 2024 Cite this Report

Kamchatkan Volcanic Eruption Response Team (KVERT) reported that during 12-19 September lava extrusion likely continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at the dome at Young Sheveluch. Thermal anomalies over the domes were identified in satellite images on 13 and 15 September; weather clouds obscured the volcano on the other days. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 September-17 September 2024 Cite this Report

KVERT reported that during 6-12 September lava extrusion likely continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at Young Sheveluch. Thermal anomalies over the domes were identified in satellite images on 7 and 10 September; weather clouds obscured the volcano on the other days. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 September-10 September 2024 Cite this Report

KVERT reported that during 1-6 September lava extrusion likely continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at a new vent or dome that formed during the 17-18 August explosive events. Daily thermal anomalies over the domes were identified in satellite images. Explosive activity during 1-2 September generated ash plumes that rose as high as 8 km (26,200 ft) a.s.l. and drifted 1,050 km NE. The plume was detected over the Arctic Ocean during 4-5 September. On 5 September a plume of resuspended ash drifted 95 km E. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 August-3 September 2024 Cite this Report

KVERT reported that during 22 August-1 September lava extrusion likely continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at a new vent or dome that formed during the 17-18 August explosive events. Thermal anomalies over the domes were identified in satellite images during 23, 26-27, and 29 August. Resuspended ash drifted 570 km SE during 28-29 August based on satellite images. Strong explosions at 1115 on 1 September generated ash plumes that rose as high as 8 km (26,200 ft) a.s.l. and drifted NE. By 2130 the ash cloud was about 340 km long and the leading E edge of the plume was about 770 km from the volcano. Explosive activity continued during 1-2 September. On 2 September ash plumes rose 3.5-4.5 km (11,500-14,800 ft) a.s.l. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 August-27 August 2024 Cite this Report

KVERT reported that during 19-22 August lava extrusion possibly continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at a new vent or dome that formed during the 17-18 August explosive events. A weak thermal anomaly over the domes was identified in satellite images on 19 and 21 August. Resuspended ash from the S flank rose as high as 3 km (10,000 ft) a.s.l. and drifted 200 km SE during 20-21 August based on webcam and satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 August-20 August 2024 Cite this Report

KVERT reported that thermal anomalies at Sheveluch, over both the “300 years of RAS” dome on the SW flank of Old Sheveluch and the lava dome in the crater of Young Sheveluch, were identified in satellite images during 8-15 August.

An explosive eruption at the “300 years of RAS” dome began at 1145 on 17 August and generated ash plumes that rose as high as 9 km (30,000 ft) a.s.l. by 1200, about 5.7 km above the summit. Both the Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences (IVS FEB RAS) and the Kamchatka Volcanological Station reported that two vents on the W flank were active and producing ash plumes. Lightning strikes occurred within the ash plumes. Ashfall was reported in Ust'-Kamchatsk (100 km SE) and by 1550 the plumes had drifted 492 km SE. KVERT raised the Aviation Color Code to Red (the highest level on a four-color scale) at 2040. Incandescence from the vents was visible at night.

Explosive activity persisted, producing ash plumes to lower altitudes, or as high as 5 km (16,400 ft) a.s.l., at least through 0553 on 18 August. The plumes drifted SE and ESE and had drifted as far as 1,520 km. By 1920 the leading edge of a 1,900-km-long ash cloud was 2,400 km from the volcano. At 2033 the Aviation Color Code was lowered to Orange. KVERT noted that although the explosive phase had likely ended, extrusion from two vents near the “300 years of RAS” dome was ongoing; one of the vents was likely new.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Kamchatka Volcanological Station; Institute of Volcanology and Seismology (IVS) of the Far Eastern Branch of the Russian Academy of Sciences (FEB RAS)

7 August-13 August 2024 Cite this Report

KVERT reported that thermal anomalies over both the “300 years of RAS” dome on the SW flank of Old Sheveluch and the lava dome in the crater of Young Sheveluch were identified in satellite images during 2-6 August. Plumes of resuspended ash drifted 210 km SE during 3-5 August. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 July-6 August 2024 Cite this Report

The Kamchatka Volcanic Eruption Response Team (KVERT) reported that eruptive activity at Sheveluch intensified during 25 July-1 August. Vigorous degassing activity accompanied the effusive eruption in the N area of the crater of Young Sheveluch, as well as the growth of the "300 years of RAS" lava dome on the SW flank of Old Sheveluch. Thermal anomalies were observed over both areas in satellite images analyzed by KVERT on 25, 28, and 30-31 July, and 1 August. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are reported in UTC; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 July-30 July 2024 Cite this Report

KVERT reported that thermal anomalies over both the “300 years of RAS” dome on the SW flank of Old Sheveluch and the lava dome in the crater of Young Sheveluch were identified in satellite images during 18-25 July. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 July-23 July 2024 Cite this Report

KVERT reported that thermal anomalies over both the “300 years of RAS” dome and the older lava dome at Sheveluch were identified in satellite images during 12-15 and 18 July. Weather conditions prevented views on the other days during 12-19 July. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 July-16 July 2024 Cite this Report

The Kamchatka Volcanic Eruption Response Team (KVERT) reported that eruptive activity at Sheveluch continued during 4-11 July. Vigorous degassing activity accompanied the effusive eruption in the crater of Young Sheveluch, as well as the growth of the "300 years of RAS" lava dome on the SW flank of Old Sheveluch. Thermal anomalies were observed in both areas on 5-8 and 11 July in satellite images analyzed by KVERT. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are reported in UTC; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 July-9 July 2024 Cite this Report

KVERT reported that thermal anomalies over both the “300 years of RAS” dome and the older lava dome at Sheveluch were identified in satellite images during 28 June and 3-4 July. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 June-2 July 2024 Cite this Report

KVERT reported that thermal anomalies over both the “300 years of RAS” dome and the older lava dome at Sheveluch were identified in satellite images during 21-27 June. Both domes continued to grow. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 June-25 June 2024 Cite this Report

KVERT reported that thermal anomalies over both the new and older lava domes at Sheveluch were identified in satellite images during 13-21 June. The report noted that the Karan-1 lava dome, located in the SW part of “Old Sheveluch,” was renamed to “300 years of RAS.” The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 June-18 June 2024 Cite this Report

KVERT reported that thermal anomalies over both the new and older lava domes at Sheveluch were identified in satellite images during 6-7 and 11-13 June; the domes were obscured by weather clouds during 8-10 June. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 June-11 June 2024 Cite this Report

KVERT reported that thermal anomalies over both the new and older lava domes at Sheveluch were identified in satellite images during 1-2 and 4-6 June; the domes were obscured by weather clouds on 31 May and 3 June. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 May-4 June 2024 Cite this Report

KVERT reported that the Karan-1 lava dome on Sheveluch’s SW flank continued to be active during 23-30 May. Thermal anomalies over both the new and older lava domes were identified in satellite images during 23-24 May; the dome was obscured by weather clouds on the other days. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 May-28 May 2024 Cite this Report

KVERT reported that the Karan-1 lava dome on Sheveluch’s SW flank continued to grow during 16-23 May. Thermal anomalies over both the new and older lava domes were identified in satellite images during 17, 19-21, and 23 May; the dome was obscured by weather clouds on the other days. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 May-21 May 2024 Cite this Report

KVERT reported that the Karan-1 lava dome on Sheveluch’s SW flank continued to grow during 9-16 May. An intense and large thermal anomaly over the dome was identified in satellite images during 9-12 May; the dome was obscured by weather clouds on the other days. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 May-14 May 2024 Cite this Report

KVERT reported that the new lava dome at Sheveluch, named Karan-1, continued to grow during 3-9 May. Strong steam-and-gas emissions rose from the active area and incandescence at the dome was visible at night. A daily intense and large thermal anomaly over the dome was identified in satellite images. Kamchatka Volcanological Station volcanologists conducted field work on 8 May, including photos and drone observations of the new dome. At that time the dome was at least 70 m high, actively growing and, spalling rock avalanches down the flanks. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Kamchatka Volcanological Station

1 May-7 May 2024 Cite this Report

The Kamchatka Volcanological Station reported that seismicity at Sheveluch began increasing on 24 April. According to KVERT a new lava dome, named Karan-1, began to grow on the SW flank at around 0200 local time on 27 April based on the intensification of thermal anomalies detected in satellite observations. During 27 April-3 May intense steam-and-gas emissions rose from the active area and on 28 April an ash plume drifted about 25 km NW. Kamchatka Volcanological Station noted that an ash plume rose 2 km on 30 April. Lava-dome incandescence was occasionally visible during the week in webcam images and a daily intense thermal anomaly over the dome complex was identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Sources: Kamchatka Volcanological Station; Kamchatkan Volcanic Eruption Response Team (KVERT)

24 April-30 April 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued during 18-26 April with a daily thermal anomaly identified in satellite images. A plume of resuspended ash drifted 195 km S and SE during 22-24 April. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 April-23 April 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued during 11-18 April with a daily thermal anomaly identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 April-16 April 2024 Cite this Report

KVERT reported continuing eruptive activity at Sheveluch. A thermal anomaly was identified in satellite images during 6-9 and 11 April. A plume of resuspended ash drifted 140 km ESE on 11 April. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 April-9 April 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued during 28 March-4 April with a daily thermal anomaly identified in satellite images. On 29 March a plume of resuspended ash drifted 65 km E. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 March-2 April 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued during 21-28 March with a daily thermal anomaly identified in satellite images. On 30 March plumes of resuspended ash from the S flank rose as high as 2.5 km (8,200 ft) a.s.l. and drifted 65 km ESE based on satellite and video data. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 March-26 March 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued with a thermal anomaly identified in satellite images during 17-21 March. Strong gas and steam emissions were observed at the Karan dome. On 21 March plumes of resuspended ash extended 65 km to the SE [Correction: plumes of resuspended ash from the S flank rose to 2 km (6,560 ft) a.s.l. and drifted 35 km ESE]. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 March-19 March 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued with a thermal anomaly identified in satellite images on 7, 9, and 13 March. Weather clouds obscured views on the other days during 7-14 March. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 March-12 March 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued during 29 February-6 March with a daily thermal anomaly identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 February-5 March 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued during 22-29 February with a daily thermal anomaly identified in satellite images. On 26 February plumes of resuspended ash drifted 120 km SE. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 February-27 February 2024 Cite this Report

KVERT reported that eruptive activity at Sheveluch continued during 15-22 February with a thermal anomaly identified in satellite images during 16, 18-19, and 22 February. On 19 February plumes of resuspended ash rose to 2.5 km (8,200 ft) a.s.l. and drifted about 55 km ESE. Weather clouds sometimes prevented views of the volcano. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 February-20 February 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 8-15 February with a daily thermal anomaly identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 February-13 February 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 1-8 February characterized by powerful degassing activity observed from the Karan dome, and thermal anomalies identified in satellite images during 1-3 and 6-7 February. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 January-6 February 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 25 January-1 February with a daily thermal anomaly identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 January-30 January 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 18-25 January. A thermal anomaly was identified in satellite images during 20-25 January; weather clouds obscured views on the other days. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 January-23 January 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 11-18 January. A thermal anomaly was identified in satellite images during 11-15 and 17 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 January-16 January 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 4-11 January with a daily thermal anomaly identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 January-9 January 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 28 December 2023-4 January 2024 with a daily thermal anomaly identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 December-2 January 2024 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 21-29 December. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 December-26 December 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 14-21 December. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 December-19 December 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 7-14 December. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 December-12 December 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 1-7 December. A daily thermal anomaly was identified in satellite images. During 3-6 December plumes of resuspended ash drifted about 230 km E and SE. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 November-5 December 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 23-30 November. Thermal anomalies were identified in satellite images on 23, 26, and 28-29 November. Strong steam-and-gas emissions were observed in the area of the Karan Dome. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 November-28 November 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 16-23 November. A daily thermal anomaly was identified in satellite images. On 17 November plumes of resuspended ash drifted about 116 km E. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 November-21 November 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 10-16 November. A daily thermal anomaly was identified in satellite images. During 9-10 November plumes of resuspended ash drifted about 275 km SE. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 November-14 November 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 8-14 November. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 November-7 November 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 26 October-2 November. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 October-31 October 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 19-26 October. A thermal anomaly was identified in satellite images during 20, 23-24, and 26 October; weather clouds obscured views on the other days. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 October-24 October 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 13-20 October and a daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 October-17 October 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 5-12 October. A daily thermal anomaly was identified in satellite images and a plume of resuspended ash drifted 90 km ESE on 11 October. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 October-10 October 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 28 September-5 October. Thermal anomalies were identified in satellite images during 28-29 September and 1-2 and 5 October; observations on other days were obscured by weather clouds. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 September-3 October 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 21-28 September. Thermal anomalies were identified in satellite images during 22 and 27-28 September; observations on other days were obscured by weather clouds. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 September-26 September 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 14-21 September. Thermal anomalies were identified in satellite images during 17-19 September; observations on other days were obscured by weather clouds. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 September-19 September 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 7-14 September. Thermal anomalies were identified in satellite images on all days except 14 September (due to weather clouds). Plumes of resuspended ash drifted 160 km SE and E during 9-11 September. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 September-12 September 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 31 August-7 September. Intense fumarolic activity was visible at the active dome, and thermal anomalies were identified in satellite images on all days except 7 September (due to weather clouds). Plumes of resuspended ash drifted 650 km SE and E during 31 August and 3-4 September. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 August-5 September 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 24-31 August. Intense fumarolic activity was visible at the active dome, and daily thermal anomalies were identified in satellite images. A plume of resuspended ash drifted 650 km SE during 30-31 August. Plumes of resuspended ash drifted 110 km E at altitudes of 2.5-3 (8,200-10,000 ft) a.s.l. on 4 September. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 August-29 August 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 17-24 August. Intense fumarolic activity was visible at the active dome, and daily thermal anomalies were identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 August-22 August 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 10-17 August. Intense fumarolic activity was visible at the active dome, and daily thermal anomalies were identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 August-15 August 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 3-10 August. Intense fumarolic activity was visible at the active dome, and thermal anomalies were identified in satellite images during 5-7 and 9 August. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 August-8 August 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 27 July-3 August. Intense fumarolic activity was visible at the active dome, and daily thermal anomalies were identified in satellite images. An ash plume was visible in satellite images drifting 82 km E on 28 July. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 July-1 August 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 20-28 July. Intense fumarolic activity was visible at the active dome, and thermal anomalies were identified in satellite images on 22, 25, and 27 July; the volcano was obscured by clouds during the other days of the week. Explosions generated ash plumes to 4.5 km (14,800 ft) a.s.l. at 0200 UTC on 28 July and 7.7-8 km (25,000-26,000 ft) a.s.l. at 0410 UTC. A resulting ash plume extended NE. Though the Aviation Color Code was briefly raised to Red (the highest on a four-color scale), about an hour later it was lowered back to Orange (the third level on a four-color scale). An ash plume on 28 July rose to 5.5-5.7 km (18,000-18,700 ft) a.s.l. and drifted ENE. Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 July-25 July 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 13-20 July. Intense fumarolic activity was visible at the active dome, and daily thermal anomalies were identified in satellite images. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 July-18 July 2023 Cite this Report

KVERT reported that the eruption at Sheveluch continued during 6-13 July. Intense fumarolic activity was visible at the active dome, and thermal anomalies were identified in satellite images during 9 and 12-13 July. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 July-11 July 2023 Cite this Report

KVERT reported that eruptive activity continued at Sheveluch during 29 June-6 July. Daily thermal anomalies were observed in satellite images and intense fumarolic activity was visible from both the active crater and lava dome. An aviation notice on 2 July described a gas-and-steam plume with some ash that rose 3.5 km a.s.l. and drifted 39 km W. Additional aviation notices caused by resuspended ash were issued on 30 June and 1, 4, and 5 July; plumes rose up to 3 km a.s.l. and drifted as far as 95 km ESE, SE, W, and WNW. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 June-4 July 2023 Cite this Report

KVERT reported that eruptive activity continued at Sheveluch during 22-29 June. Daily thermal anomalies were observed in satellite images and intense fumarolic activity was visible from both the active crater and the active lava dome. Aviation notices were issued during 26-27 June due to resuspended ash from the SE flank that sent plumes up to 3 km a.s.l. and drifted as far as 277 km ESE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 June-27 June 2023 Cite this Report

KVERT reported that the eruption at Sheveluch was ongoing during 15-22 June. Intense fumarolic activity at the active crater was likely associated with growth of the lava dome. A thermal anomaly over the active crater area was identified in satellite images during 16, 18-19, and 22 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 June-13 June 2023 Cite this Report

KVERT reported that the eruption at Sheveluch was ongoing during 1-8 June. Intense fumarolic activity at the active crater was likely associated with growth of Karan lava dome. A daily thermal anomaly over the active crater area was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 May-6 June 2023 Cite this Report

KVERT reported that the eruption at Sheveluch was ongoing during 25 May-1 June. Intense fumarolic activity at the active crater was likely associated with growth of Karan lava dome. A thermal anomaly over the active crater and Karan dome area was identified in satellite images during 25-30 May; weather clouds obscured the volcano on the other days. Plumes of ash, originally deposited during the 10-13 April eruption and resuspended by strong winds, were visible in satellite images drifting 120 km ESE during 27-28 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 May-30 May 2023 Cite this Report

KVERT reported that the eruption at Sheveluch was ongoing during 18-25 May. A thermal anomaly over the active crater and Karan lava dome area was identified in satellite images all week. Intense fumarolic activity at the active crater was likely associated with dome growth. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 May-23 May 2023 Cite this Report

KVERT reported that the eruption at Sheveluch was ongoing during 11-18 May. A thermal anomaly over the active crater and Karan lava dome area was identified in satellite images all week. Intense fumarolic activity at the active crater was likely associated with dome growth. Plumes of ash, originally deposited during the 10-13 April eruption and resuspended by strong winds, were visible in satellite images drifting 400 km SE during 14-15 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 May-16 May 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by occasional explosions, continuing lava-dome growth, incandescence, and strong fumarolic activity during 4-11 May. A thermal anomaly over the active crater and Karan lava dome area was identified in satellite images all week. Intense fumarolic activity was likely associated with dome growth. During 8-9 May ash from pyroclastic flow deposits on the SE flank were resuspended by winds and blown 60 km W based on satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 May-9 May 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by occasional explosions, continuing lava-dome growth, incandescence, and strong fumarolic activity during 27 April-4 May. A thermal anomaly was identified in satellite images all week. Satellite data showed a gas-and-steam plume with some ash drifting 60 km SE at 2350 on 29 April. The Kamchatka Volcanological Station posted pictures and video taken during a 4 May overflight that showed three active fumaroles on the dome. Low weather clouds obscured parts of the dome area. Photos showed tephra-fall on surrounding lakes, rivers, and forests, and it was noted that lahar deposits blocked a road W of the volcano. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Kamchatka Volcanological Station

26 April-2 May 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by occasional explosions, continuing lava-dome growth, incandescence, and strong fumarolic activity during 20-27 April. Gas-and-steam emissions obscured the volcano during 20-23 April. A thermal anomaly was identified in satellite images during 24-27 April. A photograph taken on 29 April by the Kamchatka Volcanological Station showed a lava dome which was higher than the crater rim. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Kamchatka Volcanological Station

19 April-25 April 2023 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 14-20 April. During 14-15 April ash plumes rose to 6 km (19,700 ft) a.s.l. and drifted 700 km NW. During 17-19 April plumes of unconsolidated ash resuspended from the flanks by wind rose to 4 km (13,100 ft) a.s.l. and drifted as far as 224 km NW. The sulfur dioxide gas portion of the eruption cloud produced during the notable 11-12 April activity continued to drift E; by 21 April the leading edge of the plume was over part of Greenland. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 April-18 April 2023 Cite this Report

According to KVERT a significant eruption at Sheveluch began at 0110 on 11 April, local time. During the most intense phase of activity ash plumes possibly rose as high as 15.8 km (52,000 ft) a.s.l., a significant sulfur dioxide signature was detected in the plume, pyroclastic flows traveled notable distances, and ash-and-lapilli-fall impacted residents. Strong explosions continued during the morning of 12 April. At 0730 on 12 April satellite images showed ash plumes rising to 8 km (26,200 ft) a.s.l., though parts of the large ash plume generated earlier extended 600 km SW and 1,050 km ESE. The explosions weakened by 1710 when ash plumes were only rising to 4.5 km (14,800 ft) a.s.l. and drifting ESE; at 1801 KVERT issued a Volcano Observatory Notice for Aviation (VONA) lowering the Aviation Color Code to Orange. By 2310 ash extended as far as 3,000 km E. KVERT noted that ash deposits in Klyuchi were as deep as 8.5 cm, and ashfall was reported in Kozyrevsk, Maiskoye, Atlasovo, Lazo, and Esso during 10-12 April. According to news sources, the ash-and-gas plumes drifted E toward the Aleutian Islands and reached the Gulf of Alaska by 13 April, causing flight disruptions. More than 100 flights involving Alaska airspace were cancelled due to the plume. Flight cancellations were also reported in NW Canada (British Columbia) during 13-14 April. Alaskan flight schedules were mostly back to normal by 15 April, with only minor delays and far fewer cancellations; a few cancellations continued to be reported in Canada.

On 13 April Kamchatka Volcanological Station (KVS) volcanologists inspected pyroclastic flow deposits that had stopped about 600 m from the Klyuchi-Ust-Kamchatsk federal highway. They walked about 1 km through deep snow (1 m) covered in 6 cm of ash and noted that some parts of the deposits were hot. Steam rose from downed smoldering trees. One picture showed a large block lodged high up in a bare tree. They also noted that the pyroclastic flow deposits were thin with very few large fragments, different from previous flows from Sheveluch. Clearing weather on 15 April revealed that most of the previous lava-dome complex was gone and there was a new crater 1 km in diameter from which voluminous steam-and-gas plumes were rising. Evidence suggested that there had been a directed blast to the SE, and pyroclastic flows traveled more than 20 km.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Kamchatka Volcanological Station; Institute of Volcanology and Seismology (IVS) of the Far Eastern Branch of the Russian Academy of Sciences (FEB RAS); Anchorage Daily News; Canadian Broadcasting Corporation (CBC); Cabin Radio

5 April-11 April 2023 Cite this Report

On 28 March the Kamchatka Volcanological Station (KVS) reported that activity had increased at Sheveluch during the previous few days. Incandescence at the summit of the lava dome was constant and the focus of activity shifted from the E side to the NE side. KVERT reported that the ongoing eruption was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images during 30 March-6 April. Satellite images showed an ash plume drifting 250 km E and SE.

Seismic data around 0054 local time on 11 April indicated a significant increase in activity, as reported by the Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences (IVS FEB RAS). According to the Tokyo VAAC the ash plume had risen to 15.8 km (52,000 ft) a.s.l. by 0110 and was drifting NW. By 0158 the plume extended over a 75 x 100 km area. KVS reported that significant pulses of activity occurred at around 0200, 0320, and then a stronger phase started around 0600. Video of the rising plume was taken at around 0600 from near Békés (3 km away) by Levin Dmitry, who reported that a pyroclastic flow traveled across the road behind him as he left the area. Ashfall began in Klyuchi (45 km SW) at 0630, and the large black ash plume had blocked the daylight by 0700. At 0729 KVERT issued a Volcano Observatory Notice for Aviation (VONA) raising the Aviation Color Code to Red (the highest level on a four-color scale). They stated that a large ash plume had risen to 10 km (32,800 ft) a.s.l. and drifted 100 km W. According to IVS FEB RAS the cloud was 200 km long and 76 km wide by 0830, and was spreading W at altitudes of 6-12 km (19,700-39,400 ft) a.s.l.

KVS reported that at about 0930 the plume drifted over Kozyrevsk (112 km SW) and turned the day to night. Almost constant lightning strikes in the plume were visible and sounds like thunderclaps were heard until about 1000. The sky lightened up in Kozyrevsk at about 1030; residents in Klyuchi reported continuing darkness and ashfall at 1100. As the day went on the light had a reddish-brown hue due to the ash in the atmosphere. In some areas ashfall was 6 cm deep and some residents reported dirty water coming from their plumbing. At 1150 an ash cloud 400 km long and 250 km wide was spreading W at altitudes of 5-20 km (16,400-65,600 ft) a.s.l., according to IVS FEB RAS. KVERT issued a VONA at 1155 noting that ash had risen to 10 km and that it had extended 340 km NNW and 240 km WSW. According to Simon Carn about 0.2 Tg of sulfur dioxide in the plume was measured in a satellite image acquired at 1343. A satellite image at 1748 showed ash plumes rising to 8 km (26,200 ft) a.s.l. and drifting 430 km WSW and S, based on a VONA. Residents of Klyuchi measured ashfall as thick as 8.5 cm, according to the Kamchatka Branch of Geophysical Services (KBGS; Russian Academy of Sciences). In a VONA issued at 0748 on 12 April KVERT stated that strong explosions were continuing. Ash plumes from explosions rose to 8 km and drifted ESE. The larger ash cloud continued to drift and had extended 600 km SW and 1,050 km ESE. IVS FEB RAS scientists photographed the terminal part of a pyroclastic flow that had traveled 19 km SSE the day before, which had stopped a few hundred meters from a bridge on the road between Kliuchi and Petropavlovsk-Kamchatsky.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Simon Carn; Kamchatka Volcanological Station; Institute of Volcanology and Seismology (IVS) of the Far Eastern Branch of the Russian Academy of Sciences (FEB RAS); Tokyo Volcanic Ash Advisory Center (VAAC)

29 March-4 April 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images during 23-30 March. Ash plumes drifted 80 km E during 25-26 and 28-30 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 March-28 March 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images during 16-23 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 March-21 March 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images during 9-16 March. Ash plumes drifted as far as 62 km E on 11 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 March-14 March 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images during 2-9 March and ash plumes drifted as far as 118 km E during 4-5 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 March-7 March 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images during 23 February-2 March. At 1150 on 5 March local time video images showed an ash plume generated by hot avalanches rising 5.5 km a.s.l. (just over 2.2 km above the summit) and drifting 5 km NE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 February-28 February 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images during 16-23 February. During a field visit to the volcano on 25 February Kamchatka Volcano Station scientists observed and photographed the dome and saw incandescent debris avalanches on the originating at the dome’s summit. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Kamchatka Volcanological Station

15 February-21 February 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 9-16 February was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 February-14 February 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 2-9 February was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images, and minor ash plumes from lava-dome collapses drifted 110 km NE on 6 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 February-7 February 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 26 January-2 February was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A persistent thermal anomaly was identified daily in satellite images, and minor ash plumes from explosions and lava-dome collapses drifted 70 km NE on 27 and 31 January and 2 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 January-31 January 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 19-26 January was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images, and minor ash plumes from explosions and lava-dome collapses drifted 25 km SW on 22 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 January-24 January 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 12-19 January was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. Explosions on 19 January produced ash plumes that were identified in satellite images rising as high as 10 km (32,800 ft) a.s.l. and drifting W at 1240 local time. KVERT raised the Aviation Color Code to Red (the highest level on a four-color scale). In a Volcano Observatory Notice for Aviation (VONA) posted at 1635 local time KVERT noted that no additional plumes were identified in satellite images. The Aviation Color Code was lowered to Orange. Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 January-17 January 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 5-12 January was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images, and minor ash plumes from explosions and lava-dome collapses drifted 92 km W on 7 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 January-10 January 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 29 December 2022-5 January 2023 was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images, and ash plumes from lava-dome collapses drifted 175 km E, NE, W, and SW during 30-31 December and 4-5 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 December-3 January 2023 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 22-29 December was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images, and gas-and-steam plumes containing some ash were visible drifting 90 km SW, S, and NE during 26-29 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 December-27 December 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 15-22 December was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images, and ash plumes were visible drifting 110 km NNE on 16 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 December-20 December 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 8-15 December was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 December-13 December 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 2-8 December was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. Collapses generated hot avalanches and ash plumes that drifted 60 km NE and E during the week. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 November-6 December 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 24 November-1 December was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. Collapses generated hot avalanches and ash plumes that drifted 90 km NE on 26 and 29 November, and 1 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 November-29 November 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 17-24 November was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. Collapses generated hot avalanches and ash plumes that drifted 80 km E during 17-18 and 20 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 November-22 November 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 11-17 November was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. Collapses generated hot avalanches and ash plumes that drifted 85 km ENE during 13-14, and 16-17 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 November-15 November 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 3-10 November was generally characterized by explosions, hot avalanches, lava-dome extrusion, and strong fumarolic activity. A daily thermal anomaly was identified in satellite images. Collapses generated hot avalanches and ash plumes that drifted 400 km N, NE, and E during 5-7 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 November-8 November 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 27 October-3 November was generally characterized by explosions, hot avalanches, and lava-dome extrusion. A daily thermal anomaly was identified in satellite images. Collapses generated hot avalanches and ash plumes that drifted 200 km SE on 31 October and 1 November. The Kamchatka Volcano Station reported that activity notably increased on 5 November. Debris avalanches and small pyroclastic flows were visible throughout the day and incandescent avalanches were seen traveling SE and SW at night. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Kamchatka Volcanological Station

26 October-1 November 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch during 20-27 October was generally characterized by explosions, hot avalanches, and lava-dome extrusion. A daily thermal anomaly was identified in satellite images. Collapses generated hot avalanches and ash plumes that drifted 80 km SE and NW during 24-25 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 October-25 October 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 14-20 October. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 October-18 October 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 6-14 October. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 October-11 October 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 29 September-6 October. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 September-4 October 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 15-22 September. A daily thermal anomaly was identified in satellite images. Plumes of re-suspended ash drifted 113 km E on 23 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 September-27 September 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 15-22 September. A daily thermal anomaly was identified in satellite images. Plumes of re-suspended ash drifted 430 km E during 17-18 and 21-22 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 September-20 September 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 8-15 September. A daily thermal anomaly was identified in satellite images. Plumes of re-suspended ash drifted 90 km E on 8 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 September-13 September 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 2-8 September. A daily thermal anomaly was identified in satellite images. Dome collapses produced hot avalanches and ash plumes that drifted 130 km NE and SE during 2 and 5-7 September. Plumes of re-suspended ash drifted 210 km ESE during 4-5 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 August-6 September 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 25 August-1 September. A daily thermal anomaly was identified in satellite images. Plumes of re-suspended ash drifted 150 km E on 25 August. Hot avalanches generated an ash plume on 1 September that drifted 70 km E. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 August-30 August 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 18-25 August. A daily thermal anomaly was identified in satellite images during 18-19, 21, and 23-25 August. Ash plumes drifted 190 km SE and 150 km E on 19 and 25 August, respectively. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 August-23 August 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 11-18 August. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 August-16 August 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 4-11 August. A daily thermal anomaly was identified in satellite images, and gas-and-steam plumes containing some ash were visible drifting 70 km E and SE during 8-9 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 August-9 August 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 29 July-4 August. A daily thermal anomaly was identified in satellite images, and ash plumes were visible drifting 24 km SW on 31 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 July-2 August 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 21-28 July. A daily thermal anomaly was identified in satellite images, and ash plumes were visible drifting 74 km SSW and SE on 22 and 24 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 July-26 July 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion during 15-21 July. A daily thermal anomaly was identified in satellite images, and ash plumes were visible drifting 125 km E and SE during 16 and 18-19 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 July-19 July 2022 Cite this Report

KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion. A thermal anomaly was identified in satellite images during 7-14 July. Satellite images showed ash plumes drifting 82 km SW and SE during 11-13 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 July-12 July 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-7 July and the eruption was characterized by ongoing explosions, hot avalanches, and lava-dome extrusion. At 1130 local time on 12 July video and satellite images showed an ash plume drifting 12 km S at altitudes of 4-4.5 km (13,100-14,800 ft) a.s.l. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 June-5 July 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 24 June-1 July and the eruption was characterized by ongoing explosions, hot avalanches, and lava-dome extrusion. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 June-28 June 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-23 June and the eruption characterized by explosions, hot avalanches, and lava-dome extrusion continued. Webcam images recorded explosions on 19 and 21 June that sent ash plumes to 7 and 5 km (23,000 and 16,400 ft) a.s.l., respectively. The ash plumes were visible in satellite images drifting 255 km ENE and 70 km SW during 19-20 and 21 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 June-21 June 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-17 June and explosions, hot avalanches, and lava-dome extrusion continued. A daily thermal anomaly was identified in satellite images. Webcam images recorded explosions on 10 June that sent ash plumes to 6.5 km (21,300 ft) a.s.l. The ash plumes were visible in satellite images drifting 130 km SE. At 0847 on 20 June (local time) explosions were recorded in webcam images. Ash plumes rose to 7 km (23,000 ft) a.s.l. and drifted 10 km E. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 June-14 June 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 4-9 June and explosions, hot avalanches, and lava-dome extrusion continued. A daily thermal anomaly was identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 June-7 June 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 27 May-3 June; explosions, hot avalanches, and lava-dome extrusion continued. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 May-31 May 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 20-27 May, and lava-dome extrusion continued. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 May-24 May 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 13-20 May, and lava-dome extrusion continued. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 May-17 May 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 6-13 May, and lava-dome extrusion continued. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 May-10 May 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 29 April-6 May, and lava-dome extrusion continued. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 April-3 May 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 22-29 April, and lava-dome extrusion continued. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 April-26 April 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 15-22 April, and lava-dome extrusion continued. Explosions during 15-16 April produced ash plumes that rose as high as 5 km (16,400 ft) a.s.l. and drifted about 75 km SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 April-19 April 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8-15 April, and lava-dome extrusion continued. Explosions on 9 April produced ash plumes that rose as high as 12 km (39,400 ft) a.s.l. and drifted more than 2,000 km NE during 9-10 April. Explosions during 13-14 April generated ash plumes that rose to 6-6.5 km (19,700-21,300 ft) a.s.l. and drifted 80-110 km SW and S. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 April-12 April 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 2-8 April. The lava dome continued to grow and strong fumarolic activity, incandescence, and avalanches accompanied this activity. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 March-5 April 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 26 March through 1 April. The lava dome continued to grow and strong fumarolic activity, incandescence, and avalanches accompanied this activity. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 March-29 March 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-25 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 March-22 March 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 11-18 March. An ash cloud was identified in satellite images drifting 50 km WNW at an altitude of 4.5 km (14,800 ft) a.s.l. on 15 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 March-8 March 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 25 February-4 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 February-1 March 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-25 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 February-22 February 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 11-18 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 February-15 February 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 4-11 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 February-8 February 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 28 January-4 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 January-1 February 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 21-28 January. Intense steam-and-gas emissions were visible. Gas, steam, and ash plumes drifted 55 km SW on 21 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 January-25 January 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 14-21 January. Intense steam-and-gas emissions with ash were visible during 15-16 January; plumes rose as high as 6.5 km (21,300 ft) a.s.l. and drifted 77 km W. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 January-18 January 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8-14 January. Intense steam-and-gas emissions with ash were visible during 6-7 and 9-11 January; plumes rose as high as 5 km (16,400 ft) a.s.l. and drifted 175 km W. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 January-11 January 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-7 January. Intense steam-and-gas emissions with ash were visible during 3 and 5-6 January; plumes rose as high as 4 km (13,100 ft) a.s.l. and drifted 180 km N and W. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 December-4 January 2022 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 24-31 December. Intense steam-and-gas emissions were visible. Ash plumes rose as high as 4.5 km (14,800 ft) a.s.l. and drifted 110 km NW and NE during 24-25, 27, and 30 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 December-28 December 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-24 December. At 1210 local time on 23 December explosions produced ash plumes that rose to 6 km (19,700 ft) a.s.l. and drifted 70 km NE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 December-21 December 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-17 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 December-14 December 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 3-10 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 December-7 December 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 26 November-3 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 November-30 November 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 19-26 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 November-23 November 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 12-19 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 November-16 November 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 5-12 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 November-9 November 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 29 October-5 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 October-2 November 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 22-29 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 October-26 October 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 16-17 and 20-21 October when the volcano was visible through weather clouds. A plume of resuspended ash rose as high as 4 km (13,100 ft) a.s.l. on 21 October and drifted 40 km SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 October-19 October 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8-15 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 October-12 October 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1, 4, and 6-7 October. Plumes of resuspended ash drifted 200 km SE during 6-7 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 September-5 October 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 24 September-1 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 September-28 September 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-24 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 September-21 September 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-17 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 September-14 September 2021 Cite this Report

KVERT reported that a bright thermal anomaly over Sheveluch was identified in satellite images during 3-10 September. The Kamchatka Branch of Geophysical Services (KBGS; Russian Academy of Sciences) Kamchatka volcano station reported that tourists visiting the volcano on 8 September experienced ashfall; weather conditions prevented views of summit. The next day they saw a small pyroclastic flow and that night saw crater incandescence and small incandescent avalanches traveling SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Institute of Volcanology and Geodynamics, Russian Academy of Natural Science

1 September-7 September 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 27 August-3 September. A gas-and-steam plume with some ash was visible in satellite data drifting 54 km NE and NW on 26 and 28 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 August-31 August 2021 Cite this Report

KVERT reported that the lava dome at Sheveluch continued to grow and produced hot lava avalanches during 20-27 August. A daily bright thermal anomaly was identified in satellite images and gas-and-steam plumes containing some ash drifted 307 km NE, E, and SE. At 1100 on 29 August an ash plume 14x15 km in dimension drifted 30 km W at altitudes of 2.5-3 km (8,200-10,000 ft) a.s.l. On 28 August the Kamchatka Branch of Geophysical Services (KBGS; Russian Academy of Sciences) posted photos of the incandescent dome and avalanches, noting that small landslides and hot avalanches periodically traveled down the S and SE flanks of the dome. Larger landslides were observed 2-4 times per night. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Institute of Volcanology and Geodynamics, Russian Academy of Natural Science

18 August-24 August 2021 Cite this Report

KVERT reported that the growth of the lava dome at Sheveluch continued during 14-24 August, accompanied by strong fumarolic activity, dome incandescence, and hot avalanches. A thermal anomaly was identified in satellite imagery all week. Gas-and-steam plumes containing some ash drifted 370 km SW, E, and SE. On 21 and 24 August ash plumes rose to 4 km (13,100 ft) a.s.l. and drifted 86 km SE and 3.5 km (11,500 ft) a.s.l. and drifted as far as 100 km SE, respectively. The Tokyo VAAC reported ash plumes during 17-25 August that rose to 3.7-5.5 km (12,000-18,000 ft) a.s.l. and drifted E, S, SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

11 August-17 August 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 6-13 August. Gas-and-steam plumes containing some ash drifted 140 km SW during 7 and 9-12 August. On 11 August the Kamchatka Branch of Geophysical Services (KBGS; Russian Academy of Sciences) reported that the spine had crumbled and incandescent material descended the flanks. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Institute of Volcanology and Geodynamics, Russian Academy of Natural Science

4 August-10 August 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 30 July-6 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 July-3 August 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 23-30 July. Activity was notable on 26 July with collapses of lava-dome blocks and small explosions. A gas-and-steam plume with some ash was visible in satellite data drifting 45 km E that same day. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 July-27 July 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 16-23 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 July-20 July 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 9-16 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 July-13 July 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 2-9 July. A plume of re-suspended ash drifted 90 km E during 6-7 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 June-6 July 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 25 June-2 July. An ash plume drifted 18 km SW on 30 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 June-29 June 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-25 June. The newest lava block (named “Dolphin-2”) that had extruded from the top of the lava dome in February was about 200 m tall and 170 m wide at the base on 16 June; the top was slowly crumbling. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 June-22 June 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-18 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 June-15 June 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 3, 6, and 8-10 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 June-8 June 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 28 May-4 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 May-1 June 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 21-28 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 May-25 May 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 14-21 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 May-18 May 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 7-14 May. A new lava block (named “Dolphin-2”) that extruded from the top of the lava dome was visible in a 15 May photo. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 May-11 May 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 30 April-7 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 April-4 May 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 23-30 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 April-27 April 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 16-23 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 April-20 April 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 9-16 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 April-13 April 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 2-9 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 March-6 April 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 28 March-2 April. On 3 April a plume of re-suspended ash rose to 2.5 km (8,200 ft) a.sl. and drifted 250 km ESE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 March-30 March 2021 Cite this Report

KVERT reported that lava dome growth at Sheveluch continued during 20-26 March, accompanied by strong fumarolic activity, incandescence, and block avalanches. Satellite imagery showed a thermal anomaly over the lava dome all week, except on 22 and 25 March due to cloud cover. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 March-23 March 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 12-19 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 March-16 March 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 5-12 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 March-9 March 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 26 February-5 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 February-2 March 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 19-26 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 February-23 February 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 12-19 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 February-16 February 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 5-12 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 February-9 February 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images on 29 January as well as 2 and 4 February. Weather clouds obscured views of the volcano on the other days during 30 January-5 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 January-2 February 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 22-29 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 January-26 January 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 15-22 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 January-19 January 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8-15 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 January-12 January 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-8 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 December-5 January 2021 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 25 December-1 January. A strong explosion on 29 December generated ash plumes that rose as high as 7 km (23,000 ft) a.s.l. and drifting 250 km W. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 December-29 December 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-25 December. Two strong explosive events on 22 and 24 December generated large ash clouds that rose as high as 8 km (26,200 ft) a.s.l. and drifted 625 km E. The Aviation Color Code was briefly raised to Red (the highest level on a four-color scale) on 22 December, but then was lowered back to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 December-22 December 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 11-18 December. On 22 December residents of Ust-Kamchatsk Village, 85 km SE, observed ash plumes rising to 8 km (26,200 ft) a.s.l. and drifting 42 km NE. The Aviation Color Code was raised to Red (the highest level on a four-color scale). Just over an hour later ash plumes rose 6.5-7.5 km (21,300-24,600 ft) a.s.l. and drifted 130 km E; the Aviation Color Code was lowered to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 December-15 December 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 4-11 December. The lava block, named “Dolphin,” which had emerged in the E part of the summit lava dome, was absent in an 8 December photo of the volcano. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Volcanoes of Kurile-Kamchatka Island Arc Information System (VOKKIA) Geoportal

2 December-8 December 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 27 November-4 December. A gas-and-steam plume drifted 60 km NE on 30 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 November-1 December 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 20-27 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 November-24 November 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 13-20 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 November-17 November 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 6-13 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 November-10 November 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 30 October-6 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 October-3 November 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 23-30 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 October-27 October 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 16-23 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 October-20 October 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8-16 October. A plume of re-suspended ash drifted 310 km SE during 8-9 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 October-13 October 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 2-9 October. A plume of re-suspended ash drifted 250 km SE during 7-8 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 September-6 October 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 25 September-2 October. A new lava block (named “Dolphin”) that extruded from the E part of the lava dome was first visible on 28 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 September-29 September 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-25 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 September-22 September 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 11, 13-14, and 16-17 September; weather clouds prevented views on other days during 11-18 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 September-14 September 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 4-5 and 8-10 September; weather clouds prevented views during 6-7 and 11 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 September-8 September 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images daily during 28 August-4 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 August-1 September 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified almost daily in satellite images during 14-28 August; weather cloud cover prevented views on 15 and 27 August. A plume of resuspended ash drifted 75 km ESE on 24 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 August-18 August 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 7-14 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 August-11 August 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-7 August. A moderate explosion produced a small ash plume that rose to 4.5 km (14,800 ft) a.s.l. and drifted SE and E on 2 August according to the Kamchatka Branch of Geophysical Services (KBGS; Russian Academy of Sciences). The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Institute of Volcanology and Geodynamics, Russian Academy of Natural Science

29 July-4 August 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 24-31 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 July-28 July 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-24 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 July-21 July 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-17 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 July-14 July 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 3-10 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 July-7 July 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 26 June-3 July. A plume of re-suspended ash drifted 140 km E on 28 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 June-30 June 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 19-26 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 June-23 June 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 12-19 June. A webcam captured an explosion on 13 June that sent ash up to 5 km (16,400 ft) a.s.l. The ash cloud drifted 120 km NE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 June-16 June 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 5-12 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 June-9 June 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 29 May-5 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 May-2 June 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 22-29 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 May-26 May 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 15-22 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 May-19 May 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8-15 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 May-12 May 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-8 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 April-5 May 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 24 April-1 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 April-28 April 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-24 April, and a plume of re-suspended ash drifted 140 km NE on 18 and 20 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 April-21 April 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-17 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 April-14 April 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 3-10 April. Explosions on 8 April generated ash plumes that rose to 10 km (32,800 ft) a.s.l. and drifted 526 km SE during 8-9 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 April-7 April 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 27 March-3 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 March-31 March 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 20-27 March. A gas-and-steam plume containing some ash drifted 45 km N on 25 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 March-24 March 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 13-20 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 March-17 March 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 6-13 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 March-10 March 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 28 February-6 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 February-3 March 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 21-28 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 February-25 February 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 15-21 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 February-18 February 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 7-14 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 February-11 February 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-7 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 January-4 February 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 23-24 and 27-30 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 January-28 January 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-24 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 January-21 January 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-17 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 January-14 January 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 3-10 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 January-7 January 2020 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 27 December-3 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 December-31 December 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-27 December. Ash plumes drifted E on 22 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 December-24 December 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 13-20 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 December-17 December 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 6-13 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 December-10 December 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 29 November-6 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 November-3 December 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 22-29 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 November-26 November 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 15-22 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 November-19 November 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8-15 November. An ash plume rose to 9-10 km (29,500-32,800 ft) a.s.l. on 11 November; ash plumes drifted as far as 1,300 km ESE during 11-12 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 November-12 November 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-8 November. Ash plumes drifted as far as 640 km NW on 3 and 5 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 October-5 November 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 25 October-1 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 October-29 October 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-25 October. Resuspended ash drifted 110 km SE during 19-20 October. Explosions recorded on 21 October generated ash plume that rose to 10-11 km (32,800-36,100 ft) a.s.l. and drifted 1,300 km SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 October-22 October 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 11-18 October. Explosions during 11-13 and 15 October produced ash plumes that rose 6.5-7 km (21,300-23,000 ft) a.s.l. and drifted 620 km E and SE. Resuspended ash drifted 125 km E during 16-17 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 October-15 October 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 4-11 October. Explosions seen in video and satellite images on 6 and 9 October produced ash plumes that rose 6.5-11 km (21,300-36,100 ft) a.s.l. and drifted 1,100 km E. Resuspended ash drifted 170 km E on 4 and 8 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 October-8 October 2019 Cite this Report

KVERT reported that during 29 September and 1-2 October video and satellite images recorded ash plumes from explosions at Sheveluch rising as high as 9 km (29,500 ft) a.s.l., and a notable pyroclastic flow traveled SE on 1 October. Ash plumes from the events drifted 1,400 km SE and E. On 6 October satellite images showed ash plumes rising to 10 km (32,800 ft) a.s.l. and drifting 430 km NE. The Aviation Color Code was raised to Red (the highest level on a four-color scale). Later that day the ash plumes were visible in satellite images drifting 1,080 km ENE. The Alert Level was lowered back to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 September-1 October 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 20-27 September. Explosions recorded during 20-21, 23, and 26 September produced ash plumes that rose to 7 km (23,000 ft) a.s.l. and drifted 580 km ESE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 September-24 September 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 13-20 September. Ash plumes drifted 200 km SW, SE, and NE during 12-15, 17, and 19 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 September-17 September 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 6-9 and 12 September. Resuspended ash formed plumes that drifted 250 km ESE during 11-12 September. Satellite and webcam data recorded ash emissions and a gas-and-steam plume with some ash drifting 50 km ESE on 12 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 September-10 September 2019 Cite this Report

KVERT reported that a daily thermal anomaly over Sheveluch’s lava dome was identified in satellite images during 30 August-6 September. Ash clouds were seen in satellite images drifting 660 km during 29 August, and 2-3 September, and 5 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 August-3 September 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 22-25 August. Ash plumes on 25 August rose to 4.5-5 km (14,800-16,400 ft) a.s.l. and drifted more than 500 km NW. At 1510 on 29 August explosions produced ash plumes that rose to 10 km (32,800 ft) a.s.l. The leading part of the plume drifted W and then curved counterclockwise to the S, then E, and finally drifted 550 km N. Explosions at 1957 on 30 August produced ash plumes that rose to 7-7.5 km (23,000-24,600 ft) a.s.l. and drifted 50 km SSE. Ash plumes drifted SE at an altitude of 5.5 km (18,000 ft) a.s.l. on 3 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 August-27 August 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 17-23 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 August-20 August 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 9-16 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 August-13 August 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 2-9 August. A diffuse ash plume rose to 2.5 km (8,200 ft) a.s.l. and drifted 40 km NW on 5 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 July-6 August 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 26 July-2 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 July-30 July 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 19-26 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 July-23 July 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 13-18 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 July-16 July 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 6-12 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 July-9 July 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 28 June-5 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 June-2 July 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 21-28 June. Explosions on 24 and 27 June generated ash plumes that rose to 4.5 km (14,800 ft) a.s.l. and drifted E and SW, respectively. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 June-25 June 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 14-21 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 June-18 June 2019 Cite this Report

KVERT reported that a thermal anomaly at Sheveluch’s lava dome was identified in daily satellite images during 8-14 June. Explosions and hot avalanches of material were captured by video and satellite data during 11-12 June. Ash plumes from the events drifted 60 km WNW. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 June-11 June 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 1-7 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 May-4 June 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 24-31 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 May-28 May 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 17-24 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 May-21 May 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 10-17 May. Plumes of re-suspended ash were visible drifting 16 km SE on 13 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 May-14 May 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 3-10 May. Gas-and-steam plumes containing some ash was visible drifting 50 km SE and SW. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 May-7 May 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 26 April-3 May. Plumes of re-suspended ash were visible drifting 200 km SE during 30 April-2 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 April-30 April 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 18-26 April. Ash plumes were visible drifting 300 km NE during 22-23 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 April-23 April 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 12-18 April. Ash plumes were visible on 13 and 15 April drifting 83 km SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 April-16 April 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 6-12 April. Explosions on 10 April generated ash plumes that rose to 8-9 km (26,200-29,500 ft) a.s.l. and drifted about 1,300 km SSE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 April-9 April 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 29 March-6 April. Explosions on 5 April generated ash plumes that rose to 7-7.5 km (23,000-24,600 ft) a.s.l. and drifted about 550 km NW during 5-6 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 March-2 April 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 22-28 March. An ash plume rose to 5 km (16,400 ft) a.s.l. and drifted about 80 km S on 25 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 March-26 March 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 15-22 March. Strong gas-and-steam emissions containing variable amounts of ash rose 3.5-4 km (11,500-13,100 ft) a.s.l. and drifted 105 km E during 15-17 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 March-19 March 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 8-15 March. Explosions on 9 March generated ash plumes that rose to 11 km (36,100 ft) a.s.l. and drifted 375 km NNW, causing KVERT to temporarily raise the Aviation Color Code to Red. Forceful gas-and-steam emissions containing variable amounts of ash rose to 3.5-4 km (11,500-13,100 ft) a.s.l. and drifted E during 10-11 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 March-12 March 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 1-8 March. Strong gas-and-steam emissions containing variable amounts of ash rose to altitudes of 3.5-4 km (11,500-13,100 ft) a.s.l. and drifted about 50 km E on 1 March. On 9 March explosions generated ash plumes that rose 10-11.2 km (32,800-36,700 ft) a.s.l. and drifted 70 km NW and N, prompting KVERT to raise the Aviation Color Code to Red (the highest level on a four-color scale). Early on 10 March the Aviation Color Code was lowered to Orange. Ash plumes continued to rise from the crater, to an altitude of 8 km (26,200 ft) a.s.l., and drift 375 km N. Later that day gas-and-steam plumes with some ash rose as high as 4.5 km (14,800 ft) a.s.l. and drifted 15 km NE. On 11 March an ash plume rose as high as 4.7 km (15,400 ft) a.s.l. and drifted 70 km SE.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 February-5 March 2019 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch’s lava dome was identified daily in satellite images during 22 February-1 March. Strong gas-and-steam emissions contained variable amounts of ash on 21, 25, and 27 February, and rose 4-5 km (13,100-16,400 ft) a.s.l. and drifted 100 km SW and E. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 February-26 February 2019 Cite this Report

KVERT reported that during 15-22 February Sheveluch’s lava dome continued to grow, extruding blocks on the N side, and producing hot avalanches and fumarolic plumes. A thermal anomaly was identified in satellite images daily. Video and satellite data recorded gas-and-steam plumes with variable ash content rising 4-5 km (13,100-16,400 ft) a.s.l. and drifting W and E. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 February-19 February 2019 Cite this Report

KVERT reported that during 8-15 February Sheveluch’s lava dome continued to grow, extruding blocks on the N side, and producing hot avalanches and fumarolic plumes. A thermal anomaly was identified in satellite images daily. Video and satellite data recorded gas-and-steam plumes with variable ash content rising to 4 km (13,100 ft) a.s.l. and drifting in multiple directions. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 February-12 February 2019 Cite this Report

KVERT reported that during 2-8 February Sheveluch’s lava dome continued grow, extruding blocks on the N side, and producing hot avalanches and fumarolic plumes. A thermal anomaly was identified in satellite images daily. Video and satellite data recorded gas-and-steam plumes with some ash content rising to 4-5 km (13,100-16,400 ft) a.s.l. and drifted 105 km E and W. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 January-5 February 2019 Cite this Report

KVERT reported that during 25 January-1 February Sheveluch’s lava dome continued grow, extruding blocks on the N side, and producing hot avalanches and fumarolic plumes. Video and satellite data recorded gas-and-steam plumes with some ash content rising to 4-4.5 km (13,100-14,800 ft) a.s.l. and drifted 415 km E and W. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 December-18 December 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 7-8 and 11-13 December. A small explosion, recorded at 1222 on 12 December, generated an ash plume that rose 6.5-6.8 km (21,300-22,300 ft) a.s.l. That same day a gas-and-steam plume, containing a small amount of ash and drifting 150 km NE, was visible in satellite data. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 December-11 December 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images on 30 November, 1 December, and 3-4 December. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 November-4 December 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images on 23 November; weather clouds prevented views of the volcano during 24-30 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 November-27 November 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 16-17 and 19-20 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 November-20 November 2018 Cite this Report

KVERT reported that explosions at Sheveluch on 9 November generated ash plumes that drifted as far as 460 km E. A weak thermal anomaly was identified in satellite images during 9-11 and 15 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 November-13 November 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite data on 2 and 6 November. Explosions at 1510 on 9 November generated ash plumes that rose to 7 km (23,000 ft) a.s.l. and drifted 5 km NE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 October-6 November 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite data during 31 October-2 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 October-30 October 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite data on 20, 22, and 25 October; weather clouds prevented views on the other days during 19-26 October. Moderate levels of gas-and-steam emissions rose from the volcano. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 October-23 October 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite data during 14-15 October; weather clouds prevented views on the other days during 12-19 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 October-16 October 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite data during 8-10 October; weather clouds prevented views on the other days during 5-12 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 October-9 October 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite data during 27-28 and 30 September; weather clouds prevented views on the other days during 29 September-5 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 September-2 October 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite data during 20, 23, and 27 September; weather clouds prevented views on the other days during 21-28 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 September-25 September 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite data during 14, 16-17, and 19-20 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 September-18 September 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite data during 7-8 and 12-13 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 September-11 September 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite data during 1-7 September. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 August-4 September 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite data during 25 and 28-30 August; cloudy weather prevented views of the volcano on the other days during 24-31 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 August-28 August 2018 Cite this Report

KVERT reported that satellite images showed a thermal anomaly over Sheveluch on 17, 19, and 23 August; cloudy weather prevented views of the volcano on the other days during 17-24 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 August-21 August 2018 Cite this Report

KVERT reported that satellite images showed a thermal anomaly over Sheveluch during 12-13 August; cloudy weather prevented views of the volcano on the other days during 10-17 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 August-14 August 2018 Cite this Report

KVERT reported that satellite images showed a thermal anomaly over Sheveluch during 6-7 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 August-7 August 2018 Cite this Report

KVERT reported that satellite images showed a thermal anomaly over Sheveluch during 27-29 July and 1-2 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 July-31 July 2018 Cite this Report

KVERT reported that satellite images showed a weak thermal anomaly over Sheveluch during 19 and 21-22 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 July-24 July 2018 Cite this Report

KVERT reported that satellite images showed a thermal anomaly over Sheveluch during 13-20 July, and a plume of re-suspended ash drifting 62 km SE on 18 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 July-17 July 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 6-13 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 July-10 July 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 4-5 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 June-3 July 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 23-29 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 June-26 June 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 16-17 and 19 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 June-19 June 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 13-14 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 June-12 June 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 5-6 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 May-5 June 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images on 31 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 May-29 May 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images on 19-20 and 23-24 May. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 May-22 May 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images on 28 and 11-16 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 May-15 May 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 10-14 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 May-8 May 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images on 28 and 30 April and 2 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 April-1 May 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 21 and 23-25 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 April-24 April 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 14-18 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 April-17 April 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 6 and 10-12 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 March-3 April 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 23-30 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 March-27 March 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-19 and 21-22 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 March-20 March 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 11-14 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 March-13 March 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images on 4 and 6-8 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 February-6 March 2018 Cite this Report

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images on 26 February and 1 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 February-27 February 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 16, 18, and 20-21 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 February-20 February 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 9-11 and 15 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 February-13 February 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-4 and 7 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 January-6 February 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images on 1 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 January-30 January 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images on 19 and 23 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 January-23 January 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 12-19 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 January-16 January 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 5-12 January. Ash plumes from explosions which began at 1035 on 10 January rose to altitudes of 10-11 km (32,800-36,100 ft) a.s.l. and drifted about 900 km E during 10-11 January. KVERT briefly raised the Aviation Color Code to Red on 10 January, and then lowered it back to Orange later that day.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 January-9 January 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 29 December 2017-5 January 2018. On 10 January satellite images captured an ash cloud, 192x132 km in dimension, from explosions rising to altitudes of 10-11 km (32,800-36,100 ft) a.s.l. and drifting 230 km NE. KVERT raised the Aviation Color Code to Red. Later that day satellite images showed an ash cloud 350x180 km in dimension drifting 400 km E; the Aviation Color Code was lowered back to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 December-2 January 2018 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 22-25 December. Explosions on 26 December generated ash plumes that rose as high as 8 km (26,200 ft) a.s.l. and drifted about 300 km NE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 December-26 December 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 19-21 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 December-19 December 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 8, 11, and 13-14 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 December-12 December 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 2 and 4-6 December. A strong explosive event on 5 December generated ash plumes that rose as high as 10.5 km (34,500 ft) a.s.l. and drifted NE. Ash plumes at 5 km (16,400 ft) a.s.l. drifted E. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 November-5 December 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 24 November-1 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 November-28 November 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 17-18, 20, and 22 November; weather clouds prevented observations on the other days during 19-24 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 November-21 November 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images on 11 November; weather clouds prevented observations on the other days during 12-17 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 November-14 November 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images on 3, 6, and 8 November; weather clouds prevented observations on the other days during 4-10 November. Explosions on 8 November generated ash plumes that rose 8 km (26,200 ft) a.s.l. and drifted 990 km NE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 November-7 November 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 26-30 October and 1-2 November. Explosions on 2 November generated ash plumes that rose 8 km (26,200 ft) a.s.l. and drifted NE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 October-31 October 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 20-22 and 25 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 October-24 October 2017 Cite this Report

KVERT reported that a plume comprised of re-suspended ash drifted about 230 km SE from the vicinity of the Sheveluch on 13 October. A thermal anomaly was identified in satellite images during 15-19 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 October-17 October 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 9-11 October. Explosions on 10 October generated ash plumes that rose 10 km (32,800 ft) a.s.l. and drifted about 250 km N. A plume comprised of re-suspended ash drifted about 350 km SE from the vicinity of the volcano on 12 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 October-10 October 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified daily in satellite images on 2 and 5 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 September-3 October 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified daily in satellite images during 22-29 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 September-26 September 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified daily in satellite images during 15-22 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 September-19 September 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified daily in satellite images during 8-15 September. Several explosive events during 8-13 September generated ash plumes that rose 9-10 km (29,500-32,800 ft) a.s.l. and drifted about 400 km NW, E, and SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 September-12 September 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified daily in satellite images during 2-3 and 6-7 September. Two explosive events on 7 September generated ash plumes that rose 8-10 km (26,200-32,800 ft) a.s.l. and drifted NE, SE, and S. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 August-5 September 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified daily in satellite images during 25 August-1 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 August-29 August 2017 Cite this Report

KVERT reported that a thermal anomaly over Sheveluch was identified daily in satellite images during 18-25 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 August-22 August 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily in satellite images over Sheveluch during 11-18 August. Ash plumes drifted about 180 km E, NW, and NE during 12 and 15-16 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 August-15 August 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily in satellite images over Sheveluch during 4-11 August. Strong explosions on 8 August produced a large ash cloud (300 x 400 km in size) that rose as high as 10 km (32,800 ft) a.s.l. and drifted more than 550 km SSE during 8-9 August. Ashfall was reported in Klyuchi Village (50 km SW) on 8 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 August-8 August 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily during 28 July-4 August in satellite images over Sheveluch. Strong explosions on 4 August generated ash plumes that rose 6.5 km (21,300 ft) a.s.l. and drifted ESE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 July-1 August 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily during 21-28 July in satellite images over Sheveluch. Strong explosions on 23 July generated ash plumes that rose 11-12 km (36,100-39,400 ft) a.s.l. and during 23-24 July drifted 1,400 km E. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 July-25 July 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily during 14-21 July in satellite images over Sheveluch. Based on video and satellite data explosive activity lasting about 8 hours on 24 July generated ash plumes that rose 11.5-12 km (37,700-39,400 ft) a.s.l. and drifted almost 700 km NE. Strong pyroclastic flows were also observed. The Aviation Color Code was raised to Red (the highest level on a four-color scale). Later that day only steam-and-gas emissions with a small amount of ash were noted; the Aviation Color Code was reduced to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 July-18 July 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily in satellite images over Sheveluch during 7-11 July; cloud cover prevented views during 12-14 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 July-11 July 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily in satellite images over Sheveluch during 1-7 July. Explosions on 2 July generated ash plumes that rose 10-11 km (32,800-36,100 ft) a.s.l.; one plume drifted 1,050 km SW and another drifted 350 km NE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 June-4 July 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily in satellite images over Sheveluch during 23-30 June. Explosions on 27 June generated ash plumes that rose as high as 10 km (32,800 ft) a.s.l. and drifted 1,400 km SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 June-27 June 2017 Cite this Report

KVERT reported that a thermal anomaly was identified daily in satellite images over Sheveluch during 16-23 June. Explosions on 17 June generated ash plumes that rose as high as 7 km (23,000 ft) a.s.l. and drifted 300 km E. Strong explosions the next day produced ash plumes that rose as high as 10 km (32,800 ft) a.s.l. and drifted 1,500 km ESE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 June-20 June 2017 Cite this Report

KVERT reported that during 10-13 June explosions at Sheveluch produced ash plumes that rose as high as 8 km (26,200 ft) a.s.l. and drifted 1,500 km SE and NW. At 0425 on 15 June powerful explosions generated ash plumes that rose as high as 12 km (39,400 ft) a.s.l. The Aviation Color Code was raised to Red (the highest level on a four-color scale), and then back down to Orange at the end of the day. Ash plumes drifted 1,000 km NE and SW during 15-16 June. Ash fell in Klyuchi (50 km SW), Maiskoe, Kozyrevsk (115 km SW), and Atlasovo (160 km SW).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 June-13 June 2017 Cite this Report

KVERT reported that during 3, 5, and 7-8 June powerful explosions at Sheveluch generated ash plumes that rose as high as 8 km (26,200 ft) a.s.l. and drifted 1,554 km SW, S, and SE. Pyroclastic flows traveled 10 km. Ashfall was reported in Klyuchi Village (50 km SW) on 8 June. A thermal anomaly was identified daily in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 May-6 June 2017 Cite this Report

KVERT reported that during 26-27 and 31 May powerful explosions at Sheveluch generated ash plumes that rose 8 km (26,200 ft) a.s.l. and drifted 550 km ESE and about 650 km WSW. A thermal anomaly was identified in satellite images during 26 May-2 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 May-30 May 2017 Cite this Report

KVERT reported that during 23-25 May powerful explosions at Sheveluch generated ash plumes that rose 8 km (26,200 ft) a.s.l. and drifted 715 km in different directions. At 0830 on 25 May explosions generated ash plumes that rose 9-10 km (29,500-32,800 ft) a.s.l. and drifted 16 km NE. The Aviation Color Code (ACC) was raised to Red (the highest color on a four-color scale). Around 30 minutes later the ash plume was identified in satellite images drifting 45 km ENE. Strong steam-and-gas emissions rose from the lava dome. The ACC was lowered to Orange. Within the next hour the ash plume drifted 82 km E.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 May-23 May 2017 Cite this Report

KVERT reported that during 13-14 May a series of explosions at Sheveluch generated ash plumes that rose 4.5-5 km (14,800-16,400 ft) a.s.l. and drifted SW and SE. Powerful explosions on 16 May generated ash plumes that rose as high as 11 km (36,100 ft) a.s.l. and drifted about 150 km ENE. Pyroclastic flows descended the S flank. Two explosions were detected on 18 May. Ash plumes during 16-19 May drifted 400 km ENE. The Aviation Color Code (ACC) remained at Orange during 13-19 May, except for a few hours on 16 May when the strong explosions prompted KVERT to raise the ACC to Red.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 May-16 May 2017 Cite this Report

KVERT reported continuing lava-dome extrusion at Sheveluch’s N flank during 5-11 May. A daily thermal anomaly over the dome was identified in satellite images, and ash plumes drifted 90 km NNE and NW on 8 and 10 May. Strong explosions on 12 May generated ash plumes identified in satellite images that rose 9-10 km (29,500-32,800 ft) a.s.l., spread 70 km wide, and drifted 115 km NW. The Aviation Color Code was raised to Red. A few hours later satellite images showed a thermal anomaly and no ash emissions; the Aviation Color Code was lowered to Orange. Explosions on 16 May generated ash plumes that rose 8-9 km (26,200-29,500 ft) a.s.l., prompting KVERT to again raise the Aviation Color Code to Red. Pyroclastic flows descended the flanks and produced ash plumes that rose 3.5-4 km (11,500-13,100 ft) a.s.l. and drifted NE. Within a few hours satellite images showed a thermal anomaly and no ash emissions; the Aviation Color Code was lowered to Orange. An ash cloud with the dimensions of 51 x 43 km was still visible in satellite images, moving E.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 May-9 May 2017 Cite this Report

KVERT reported that during 28 April-5 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. A thermal anomaly at the dome was identified daily in satellite images. Ash plumes drifted more than 730 km SE, SW, and NW during 27 April-3 May; explosions on 30 April generated ash plumes that rose to an altitude of 9.1 km (30,000 ft) a.s.l. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 April-2 May 2017 Cite this Report

KVERT reported that during 21-28 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. A thermal anomaly over the dome was identified in satellite images daily. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 April-25 April 2017 Cite this Report

KVERT reported that during 15-21 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a thermal anomaly over the dome during 13-17 April, and an ash plume that drifted 95 km E on 15 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 April-18 April 2017 Cite this Report

KVERT reported that during 7-14 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and an ash plume that drifted 82 km SW on 10 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 April-11 April 2017 Cite this Report

KVERT reported that during 1-6 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 20 km SE on 3 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 March-4 April 2017 Cite this Report

KVERT reported that during 24-31 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 20 km SW on 24 and 26 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 March-28 March 2017 Cite this Report

KVERT reported that during 17-24 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 126 km WNW on 19 and 21 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 March-21 March 2017 Cite this Report

KVERT reported that during 10-17 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 100 km NW on 9 and 14 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 March-14 March 2017 Cite this Report

KVERT reported that during 3-10 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted NW 5 and 8-9 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 March-7 March 2017 Cite this Report

KVERT reported that during 24 February-3 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Explosions on 24 February generated ash plumes that rose to an altitude of 5 km (16,400 ft) a.s.l. and drifted E. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 95 km NE during 25-26 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 February-28 February 2017 Cite this Report

KVERT reported that during 17-24 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 100 km NE on 18 February. Explosions on 20 February generated ash plumes that rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted NW. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 February-21 February 2017 Cite this Report

KVERT reported that during 10-17 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 February-14 February 2017 Cite this Report

KVERT reported that during 3-10 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an ash plume that drifted 112 km NW on 4 February and a thermal anomaly over the dome during 5 and 7-9 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 February-7 February 2017 Cite this Report

KVERT reported that during 27 January-3 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 January-31 January 2017 Cite this Report

KVERT reported that during 20-27 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 January-24 January 2017 Cite this Report

KVERT reported that during 13-20 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 January-17 January 2017 Cite this Report

KVERT reported that during 6-13 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 January-10 January 2017 Cite this Report

KVERT reported that during 30 December 2016-6 January 2017 lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted about 100 km N and NE on 30 and 31 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 December-3 January 2017 Cite this Report

KVERT reported that during 23-30 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. Explosions recorded by a webcam on 24 December generated ash plumes that rose 6.5-7 km (21,300-23,000 ft) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 December-27 December 2016 Cite this Report

KVERT reported that during 10-16 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 370 km NNW during 16-20 December. A webcam recorded an explosion on 19 December with an ash plume that rose 7 km a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 December-20 December 2016 Cite this Report

KVERT reported that during 10-16 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 December-13 December 2016 Cite this Report

KVERT reported that during 2-9 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a thermal anomaly over the dome on clear days, and ash plumes drifting 60 km NW on 8 December.

On 10 December explosions generated ash plumes observed in satellite images that rose to altitudes of 10-11 km (32,800-36,000 ft) a.s.l. and drifted 320 km NNE and N. The Aviation Color Code was raised to Red. Satellite images later that day showed a thermal anomaly over the volcano but no ash emissions; the leading edge of the ash plume released earlier was 910 km NNE, drifting at an altitude of 11 km (36,000 ft). The Aviation Color Code was lowered to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 November-6 December 2016 Cite this Report

KVERT reported that during 25 November-2 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome and ash plumes drifting 375 km SE and S on 26 November and 1 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 November-29 November 2016 Cite this Report

KVERT reported that during 18-25 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions with ash plumes as high as 6 km (19,700 ft) a.s.l., and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. Satellite and video data recorded ash plumes rising to altitudes of 6-6.5 km (19,700-21,300 ft) a.s.l. and drifted 130 km SW, E, and NE on 18, 20, 22, and 24 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 November-22 November 2016 Cite this Report

KVERT reported that during 11-18 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions with ash plumes as high as 6 km (19,700 ft) a.s.l., and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted as far as 170 km E on 12 and 15 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 November-15 November 2016 Cite this Report

KVERT reported that during 4-11 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions with ash plumes as high as 6 km (19,700 ft) a.s.l., and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. According to video and satellite data, ash plumes drifted as far as 143 km E during 3-4 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 November-8 November 2016 Cite this Report

KVERT reported that during 28 October-4 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, explosions with ash plumes as high as 6 km (19,700 ft) a.s.l., and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. According to video and satellite data, ash plumes drifted just over 300 km NE, E, and SE during 30-31 October, and 1 and 3 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 October-1 November 2016 Cite this Report

KVERT reported that during 21-28 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions with ash plumes as high as 7 km (23,000 ft) a.s.l., and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. According to video and satellite data, ash plumes drifted just over 300 km E, N, and NW on 20, 22, and 26 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 October-25 October 2016 Cite this Report

KVERT reported that during 14-21 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. According to video and satellite data, explosions generated ash plumes that rose to altitudes of 6-7 km (19,700-23,000 ft) a.s.l. and drifted 210 km NW, E, and SE during 14-16, 18, and 20 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 October-18 October 2016 Cite this Report

KVERT reported that during 7-14 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. According to video and satellite data, explosions generated ash plumes that rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted 65 km N, NE, E, and SE during 10 and 12-13 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 October-11 October 2016 Cite this Report

KVERT reported that during 30 September-7 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. Video and satellite data showed that during 2-3 and 5-6 October. Re-suspended ash formed a plume that drifted about 280 km E and SE during 3-4 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 September-4 October 2016 Cite this Report

KVERT reported that during 23-30 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. Re-suspended ash formed a plume that drifted about 100 km SE and E during 28-29 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 September-27 September 2016 Cite this Report

KVERT reported that during 16-23 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. A moderate explosion on 18 September caused dome collapse and 10-km-long pyroclastic flows. Pyroclastic-flow deposits were noted in the Baydarnaya River valley and in the central part of the S flank. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 September-20 September 2016 Cite this Report

KVERT reported that during 9-16 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 September-13 September 2016 Cite this Report

KVERT reported that during 2-9 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 August-6 September 2016 Cite this Report

KVERT reported that during 26 August-2 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 August-30 August 2016 Cite this Report

KVERT reported that during 19-26 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 August-23 August 2016 Cite this Report

KVERT reported that during 12-19 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 August-16 August 2016 Cite this Report

KVERT reported that during 5-12 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 August-9 August 2016 Cite this Report

KVERT reported that during 29 July-5 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 July-2 August 2016 Cite this Report

KVERT reported that during 22-29 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 July-26 July 2016 Cite this Report

KVERT reported that during 15-22 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 July-19 July 2016 Cite this Report

KVERT reported that during 8-15 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 July-12 July 2016 Cite this Report

KVERT reported that during 1-8 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a thermal anomaly over the dome. On 4 July re-suspended ash from the vicinity of Sheveluch drifted 65 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 June-5 July 2016 Cite this Report

KVERT reported that during 24 June-1 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 June-28 June 2016 Cite this Report

KVERT reported that during 17-24 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 June-21 June 2016 Cite this Report

KVERT reported that during 10-17 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 June-14 June 2016 Cite this Report

KVERT reported that during 3-10 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 June-7 June 2016 Cite this Report

KVERT reported that during 27 May-3 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense thermal anomaly over the dome during 26-29 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 May-31 May 2016 Cite this Report

KVERT reported that during 20-27 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 May-24 May 2016 Cite this Report

KVERT reported that during 13-20 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 May-17 May 2016 Cite this Report

KVERT reported that during 6-13 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 May-10 May 2016 Cite this Report

KVERT reported that during 29 April-6 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome, and ash plumes drifting 36 km SE on 2 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 April-3 May 2016 Cite this Report

KVERT reported that during 21-29 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 April-26 April 2016 Cite this Report

KVERT reported that during 15-21 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 April-19 April 2016 Cite this Report

KVERT reported that during 8-15 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 April-12 April 2016 Cite this Report

KVERT reported that during 1-8 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed an intense daily thermal anomaly over the dome, and an ash plume that drifted 65 km SE on 2 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 March-5 April 2016 Cite this Report

KVERT reported that during 25 March-1 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 March-29 March 2016 Cite this Report

KVERT reported that during 18-25 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected an intense thermal anomaly over the dome almost every day; cloud cover obscured views of the volcano during 20-21 March. An ash plume drifted 38 km N on 23 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 March-22 March 2016 Cite this Report

KVERT reported that during 11-18 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 March-15 March 2016 Cite this Report

KVERT reported that during 4-11 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 March-8 March 2016 Cite this Report

KVERT reported that during 26 February-4 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. A gas-and-steam plume with minor amounts of ash drifted almost 55 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 February-1 March 2016 Cite this Report

KVERT reported that during 19-26 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 February-23 February 2016 Cite this Report

KVERT reported that during 12-19 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Explosions on 18 February generated ash plumes that drifted NE. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 February-16 February 2016 Cite this Report

KVERT reported that during 5-12 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 February-9 February 2016 Cite this Report

KVERT reported that during 29 January-5 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. Ash plumes drifted about 60 km SW on 29 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 January-2 February 2016 Cite this Report

KVERT reported that during 22-29 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 January-26 January 2016 Cite this Report

KVERT reported that during 15-22 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 January-19 January 2016 Cite this Report

KVERT reported that during 8-15 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Explosions on 9 January generated ash plumes that rose to an altitude of 7 km (23,000 ft) a.s.l. and drifted W. Satellite images detected a daily and intense thermal anomaly over the dome, and ash plumes that drifted 200 km W during 9-10 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 January-12 January 2016 Cite this Report

KVERT reported that during 1-8 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. A collapse from the W flank of the lava dome on 3 January produced a hot avalanche, and an ash plume that rose 5.5 km (18,000 ft) a.s.l. and drifted NE. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 December-5 January 2016 Cite this Report

KVERT reported that during 25 December-1 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. A collapse from the W flank of the lava dome produced a hot avalanche, and an ash plume that rose 5.5 km (18,000 ft) a.s.l. and drifted 50 km SE. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 December-29 December 2015 Cite this Report

KVERT reported that during 18-25 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome, and ash plumes from hot avalanches rose up to 5 km (16,400 ft) a.s.l. that drifted SE on 21 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 December-22 December 2015 Cite this Report

KVERT reported that during 11-18 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome, and ash plumes from hot avalanches that drifted 50 km SE on 15 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 December-15 December 2015 Cite this Report

KVERT reported that during 4-11 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome, and ash plumes that rose to altitudes of 4-4.5 km (13,100-14,800 ft) a.s.l. and drifted 130 km on 4, 6, and 10 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 December-8 December 2015 Cite this Report

KVERT reported that during 27 November-4 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 November-1 December 2015 Cite this Report

KVERT reported that during 20-27 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome and SE-drifting ash plumes during 22 and 25-26 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 November-24 November 2015 Cite this Report

KVERT reported that during 13-20 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 November-17 November 2015 Cite this Report

KVERT reported that during 6-13 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected an intense daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 November-10 November 2015 Cite this Report

KVERT reported that during 30 October-6 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected an intense daily thermal anomaly over the dome. Explosions and hot avalanches generated ash plumes that rose to an altitude of 3.5 km (11,500 ft) a.s.l. and drifted about 30 km SE on 3 and 5 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 October-3 November 2015 Cite this Report

KVERT reported that during 23-30 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images detected a daily and intense thermal anomaly over the dome. Explosions and hot avalanches generated ash plumes that rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted 80 km E, NE, and NW during 23-24 and 28-29 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 October-20 October 2015 Cite this Report

KVERT reported that during 9-16 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. An ash plume drifted 44 km SW on 9 Ocotber. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 October-13 October 2015 Cite this Report

KVERT reported that during 2-9 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. Explosions and hot avalanches occurring during 2 and 7-8 October generated ash plumes that rose to altitudes of 2.5-5.5 km (8,200-18,000 km) a.s.l. and drifted 400 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 September-6 October 2015 Cite this Report

KVERT reported that during 25 September-2 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. On 26 September a 30 x 15 km ash cloud generated by an avalanche rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted 130 km SE. A strong explosion at 0959 on 4 October generated an ash plume that rose to an altitude of 6.5 km (21,300 ft) a.s.l. and drifted SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 September-29 September 2015 Cite this Report

KVERT reported that during 18-25 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected an almost daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 September-22 September 2015 Cite this Report

KVERT reported that during 11-18 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. Based on video and satellite data, re-suspended ash from strong winds drifted 185 km SE during 15-16 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 September-15 September 2015 Cite this Report

KVERT reported that during 4-11 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected an almost daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 September-8 September 2015 Cite this Report

KVERT reported that during 28 August-4 September lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected an almost daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 August-1 September 2015 Cite this Report

KVERT reported that during 21-28 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected an almost daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 August-25 August 2015 Cite this Report

KVERT reported that during 14-21 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 August-18 August 2015 Cite this Report

KVERT reported that during 7-14 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 August-11 August 2015 Cite this Report

KVERT reported that during 31 July-7 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a thermal anomaly over the dome during 31 July, and 2-3 and 5-6 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 July-4 August 2015 Cite this Report

KVERT reported that during 24-31 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 July-28 July 2015 Cite this Report

KVERT reported that during 17-24 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 July-21 July 2015 Cite this Report

KVERT reported that during 10-17 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images showed a thermal anomaly over the dome during 10-11, 14, and 16 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 July-14 July 2015 Cite this Report

KVERT reported that during 3-10 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. Satellite images showed a thermal anomaly over the dome during 2-4 July. Ash plumes that rose as high as 3.3 km (10,800 ft) a.s.l. were observed during 5-6 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 July-7 July 2015 Cite this Report

KVERT reported that during 26 June-3 July lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. Satellite images showed a thermal anomaly over the volcano during 25-28 and 30 June; weather clouds obscured the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 June-30 June 2015 Cite this Report

KVERT reported that during 19-26 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. Satellite images showed a thermal anomaly over the volcano during 23-24 June; weather clouds obscured the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 June-23 June 2015 Cite this Report

KVERT reported that during 12-19 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. Satellite images showed an ash plume drifting W at an altitude of 5 km (16,400 ft ) a.s.l. on 15 June, and a thermal anomaly over the volcano during 15-17 June. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 June-16 June 2015 Cite this Report

KVERT reported that during 5-12 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. A thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 June-9 June 2015 Cite this Report

KVERT reported that during 29 May-5 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. A thermal anomaly was detected in satellite images on 30 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 May-2 June 2015 Cite this Report

KVERT reported that during 22-29 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. A thermal anomaly was detected in satellite images on 23 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 May-26 May 2015 Cite this Report

KVERT reported that during 15-22 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. A thermal anomaly was detected in satellite images during 15-19 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 May-19 May 2015 Cite this Report

KVERT reported that during 8-15 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. A daily thermal anomaly was also detected in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 May-12 May 2015 Cite this Report

KVERT reported that during 1-8 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. A daily thermal anomaly was also detected in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 April-5 May 2015 Cite this Report

KVERT reported that during 24 April-1 May lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. A daily thermal anomaly was also detected in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 April-28 April 2015 Cite this Report

KVERT reported that during 17-24 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. A thermal anomaly was detected during 16-18 and 23 April; cloud cover obscured views on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 April-21 April 2015 Cite this Report

KVERT reported that during 10-17 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Several ash plumes rose to an altitude of 7 km (23,000 ft) a.s.l. Satellite images showed ash plumes drifting as far as 380 km E and SE during 9-11 and 13-16 April. A daily thermal anomaly was also detected. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 April-14 April 2015 Cite this Report

KVERT reported that during 3-10 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 3 and 7 April generated ash plumes that rose to altitudes of 9 and 12 km (32,800 ft) a.s.l., and drifted 100 km SE and more than 450 km NE, respectively. A daily thermal anomaly was also visible in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 April-7 April 2015 Cite this Report

KVERT reported that during 27 March-3 April lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. A strong explosion on 29 March generated ash plumes that rose to an altitude of 10 km (32,800 ft) a.s.l. and drifted more than 155 km W. A daily thermal anomaly was also visible in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 March-31 March 2015 Cite this Report

KVERT reported that during 20-27 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 20, 22, and 25 March generated ash plumes that rose to altitudes of 7-10 km (23,000-32,800 ft) a.s.l. Ash plumes visible in satellite images drifted more than 600 km N, E, and SE during 20-22 and 25-26 March. A daily thermal anomaly was also visible in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 March-24 March 2015 Cite this Report

KVERT reported that during 13-20 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 16 March generated ash plumes that rose to an altitude of 9 km (29,500 ft) a.s.l. and drifted 200 km E; ashfall was reported in Ust-Kamchatsk Village, 85 km SE. A daily thermal anomaly was visible in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 March-17 March 2015 Cite this Report

KVERT reported that during 6-13 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 8 March generated ash plumes that rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. and drifted 885 km E. A daily thermal anomaly was visible in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 March-10 March 2015 Cite this Report

KVERT reported that during 27 February-6 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 28 February and 3 March generated ash plumes that rose to an altitude of 9 km (29,500 ft) a.s.l. Ash fell in Ust-Kamchatsk, 85 km SE. Satellite images showed a daily thermal anomaly and ash plumes that drifted 600 km E and NE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 February-3 March 2015 Cite this Report

KVERT reported that during 20-27 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions during 20-21, 24, and 26 February generated ash plumes that rose to altitudes of 6-7 km (19,700-23,000 ft) a.s.l. and drifted 580 km E and NE during 20-21 and 24-26 February. A thermal anomaly over the dome was detected daily. The Aviation Color Code remained at Orange. According to a news article ash caused a few flight cancellations in W Alaska on 28 February.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); CNN

18 February-24 February 2015 Cite this Report

KVERT reported that during 13-20 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 16 and 17 February generated ash plumes that rose to an altitude of 8 km (26,200 ft) a.s.l. and drifted 180 km NW. A thermal anomaly over the dome was detected daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 February-17 February 2015 Cite this Report

KVERT reported that during 6-13 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. A strong explosion on 8 February generated ash plumes that rose to altitudes of 9-10 km (29,500-32,800 ft) a.s.l. and drifted 180 km NW. A thermal anomaly over the dome was detected daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 February-10 February 2015 Cite this Report

KVERT reported that during 30 January-6 February lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 1 and 4 February generated ash plumes that rose to altitudes of 10 and 6 km (32,800 and 19,700 ft) a.s.l., respectively. Satellite images detected ash plumes drifting NE and N more than 800 km during 1-2 February and 90 km during 4-5 February. A thermal anomaly over the dome was detected daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 January-3 February 2015 Cite this Report

KVERT reported that during 23-30 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Strong explosions on 21, 26, and 29 January generated ash plumes that rose to altitudes of 4-7.5 km (13,100-24,600 ft) a.s.l. Satellite images detected ash plumes drifting more than 500 km NW, NE, and E during 21-22, 26-27, and 29 January. A thermal anomaly over the dome was detected daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 January-27 January 2015 Cite this Report

KVERT reported that during 16-23 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Strong explosions during 18-21 January generated ash plumes that rose to altitudes of 6-7 km (19,700-23,000 ft) a.s.l. Satellite images detected ash plumes drifting more than 118 km ENE on 18 January and more than 530 km NE during 21-22 January. A thermal anomaly over the dome was detected daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 January-20 January 2015 Cite this Report

KVERT reported that during 9-16 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Strong explosions during 10-12 and 15 January generated ash plumes that rose to altitudes of 6-10 km (19,700-32,800 ft) a.s.l. Ashfall was reported in Klyuchi Village (50 km SW) on 12 January. Satellite images detected ash plumes drifting more than 200 km W and SW during 10-12 and 15-16 January, and a thermal anomaly over the dome daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 January-13 January 2015 Cite this Report

KVERT reported that during 2-9 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. A strong explosion on 7 January generated an ash plume that rose to altitudes of 8-9 km (26,200-29,500 ft) a.s.l. A small pyroclastic flow descended the SE flank of the dome. Satellite images detected an ash plume drifting 350 km NW on 7 January, and a thermal anomaly over the dome during 7-8 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 December-6 January 2015 Cite this Report

KVERT reported that during 27 December-2 January lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Strong explosions on 26 and 29 December generated ash plumes that rose to altitudes of 6-9 km (19,700-29,500 ft) a.s.l. and drifted 60 km W and 370 km ENE respectively. Satellite images detected a thermal anomaly over the dome during 27-30 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 December-30 December 2014 Cite this Report

KVERT reported that during 19-26 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. A strong explosion on 20 December generated an ash plume that rose to an altitude of 6 km (19,700 ft) a.s.l. Satellite images detected a thermal anomaly over the dome during 19-21 and 23-25 December, and ash plumes drifting 370 km E during 20-21 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 December-23 December 2014 Cite this Report

KVERT reported that during 12-19 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. A strong explosion on 17 December generated ash plumes that rose to altitudes of 9-10 km (29,500-32,800 ft) a.s.l. Satellite images detected a thermal anomaly over the dome during 12, 14, and 16-18 December, and ash plumes that drifted 109 km SE during 14-15 December and 35 km ESE on 17 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 December-16 December 2014 Cite this Report

KVERT reported that during 5-12 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Two strong explosions on 5 and 11 December generated ash plumes that rose to altitudes of 8-9 km (26,200-29,500 ft) a.s.l. and drifted 200 km ENE on 5 December and 364 km on 11 December. Satellite images detected a thermal anomaly over the dome during 5 and 9-11 December; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 December-9 December 2014 Cite this Report

KVERT reported that during 27 November-4 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 28-29 November and 2 December; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 November-2 December 2014 Cite this Report

KVERT reported that during 21-27 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Strong explosions at 1021 on 23 November and 0328 on 26 November generated ash plumes that rose to altitudes of 8-9 km (26,200-29,500 ft) a.s.l and drifted 400 km NE and 200 km SE, respectively. Satellite images detected a thermal anomaly over the dome during 22-23 and 26-27 November; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 November-25 November 2014 Cite this Report

KVERT reported that during 14-21 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. A strong explosion at 2217 on 16 November generated a 30 x 10 km ash cloud that drifted 590 km SW. Satellite images detected a thermal anomaly over the dome during 18-20 November; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 November-18 November 2014 Cite this Report

KVERT reported that during 7-14 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Satellite images detected a weak thermal anomaly over the dome on 12 November; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 November-11 November 2014 Cite this Report

KVERT reported that during 31 October-7 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 1-3 November; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 October-4 November 2014 Cite this Report

KVERT reported that during 24-31 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 27 and 29-30 October; cloud cover prevented views of the volcano on the other days. Strong explosions on 28 and 30 October generated ash plumes that rose to altitudes of 11 km (36,000 ft) a.s.l. and 7-8 km (23,000-26,200 ft) a.s.l., respectively. Ash plumes on those two days drifted more than 500 km NE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 October-28 October 2014 Cite this Report

KVERT reported that during 17-24 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 17, 20, and 22 October; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 October-21 October 2014 Cite this Report

KVERT reported that during 10-17 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 10-11 and 15 October; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 October-14 October 2014 Cite this Report

KVERT reported that during 3-10 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 3 and 8-9 October; cloud cover prevented views of the volcano on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 October-7 October 2014 Cite this Report

KVERT reported that during 26 September-3 October lava-dome extrusion onto Sheveluch’s N flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 27-29 September and 2 October. Two explosions on 2 October generated ash plumes that rose to an altitude of 4 km (13,100 ft) a.s.l. and drifted 220 km WSW. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 September-30 September 2014 Cite this Report

KVERT reported that during 19-26 September lava-dome extrusion onto Shiveluch’s N flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome during 18 and 22-25 September. Strong explosions that began at 1238 on 24 September generated ash plumes that rose 11-11.5 km (36,000-37,700 ft) a.s.l. A large ash cloud, 250 by 207 km, drifted NNE. The Aviation Color Code was raised to Red and then lowered back to Orange that same day as the explosive activity subsided.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 September-23 September 2014 Cite this Report

KVERT reported that during 12-19 September lava-dome extrusion onto Shiveluch’s N flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a daily thermal anomaly over the dome. On 14 September a video camera recorded a short-duration explosion which produced an ash plume that rose 6 km (19,700 ft) a.s.l.; strong gas-and-steam activity was noted afterwards. On 24 September explosions generated ash plumes that rose 11 km (36,000 ft) a.s.l. and drifted N. Ash plumes also drifted E at an altitude of 5 km (16,400 ft) a.s.l. The Aviation Color Code was raised to Red.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 September-16 September 2014 Cite this Report

KVERT reported that the explosive and effusive eruption of Shiveluch continued and maintained Alert Level Orange during the week of 12 September. Activity was dominated by lava dome growth on the SE flank, moderate ash explosions, fumarolic activity, and hot avalanches. Satellite data showed a persistent thermal anomaly from the dome region during 4-5, 7 and 11 September. Remobilized ash was observed in a dust plume on 11 September that rose 1-2 km (3,280-6,562 ft) a.s.l. and drifted SE.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 September-9 September 2014 Cite this Report

KVERT reported that the explosive and effusive eruption of Shiveluch continued and maintained Alert Level Orange during the week of 5 September. Activity was dominated by lava dome growth on the SE flank, moderate ash explosions, fumarolic activity, and hot avalanches. Satellite data showed a persistent thermal anomaly from the dome region.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 August-2 September 2014 Cite this Report

KVERT reported that during 22-28 August lava-dome extrusion onto Shiveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. Satellite data showed a thermal anomaly over the lava dome on 24-28 August. The volcano was obscured by clouds the other days of week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 August-26 August 2014 Cite this Report

KVERT reported that during 15-21 August lava-dome extrusion onto Sheveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. Satellite data showed a thermal anomaly over the lava dome on 18-19 August. The volcano was obscured by clouds the other days of week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 August-19 August 2014 Cite this Report

KVERT reported that during 8-14 August lava-dome extrusion onto Shiveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. On 11-14 August satellite data showed a thermal anomaly over the lava dome, and the volcano was obscured by clouds the other days of week. On 9 August the Tokyo VAAC reported an ash plume rose to 4.6 km (15,000 ft) a.s.l. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

6 August-12 August 2014 Cite this Report

KVERT reported that during 1-7 August lava-dome extrusion onto Shiveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. Satellite data showed a thermal anomaly over the lava dome on 7 August and the volcano was obscured by clouds in the other days of week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 July-5 August 2014 Cite this Report

KVERT reported that during 25 July-1 August lava-dome extrusion onto Shiveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. Satellite images were obscured by clouds over the past week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 July-29 July 2014 Cite this Report

KVERT reported that during 19-26 July lava-dome extrusion onto Shiveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. Satellite data showed a thermal anomaly over the volcano, but satellite images were obscured by clouds or showed the volcano was quiet over the past week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 July-22 July 2014 Cite this Report

KVERT reported that during 11-18 July lava-dome extrusion onto Shiveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. Satellite data showed a thermal anomaly over the volcano on 16-17 July. An eruption was reported to 8.2 km (27,000 ft) a.s.l. on 18 July. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

9 July-15 July 2014 Cite this Report

KVERT reported that during 3-10 July lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Ash plumes rose to 7 km (23,000 ft) a.s.l. on 30 June and 11 km (36,000 ft) a.s.l. during 5-8 July. During 7-8 July, satellite images detected ash plumes extending 280 km SE of the volcano. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 June-1 July 2014 Cite this Report

KVERT reported that during 20-27 June lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome on 22 and 25 June. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 June-24 June 2014 Cite this Report

KVERT reported that during 14-19 June lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly and an ash plume drifting 70 km SW during 15-18 June. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 June-17 June 2014 Cite this Report

KVERT reported that during 6-13 June lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly and an ash plume drifting 70 km SW during 7-8 and 12 June. Ashfall in Klyuchi (50 km SW) was reported on 11 June. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 June-10 June 2014 Cite this Report

KVERT reported that during 30 May-6 June lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome on 31 May and 1 and 3 June. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 May-3 June 2014 Cite this Report

KVERT reported that during 23-30 May lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. An explosion on 26 May generated an ash plume that rose as high as 10 km (32,800 ft) a.s.l. and drifted 800 km SSE. Satellite images detected a thermal anomaly over the dome during 23-25 and 27-28 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 May-27 May 2014 Cite this Report

KVERT reported that during 16-23 May lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome on 16 and 19 May. Satellite images on 27 May showed ash plumes rising to altitudes of 3-10 km (9,800-32,800 ft) and drifted as far as 850 km S. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 May-20 May 2014 Cite this Report

KVERT reported that during 9-16 May lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images showed a bright thermal anomaly daily. Satellite images detected daily thermal anomalies. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 May-13 May 2014 Cite this Report

KVERT reported that during 2-8 May lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images showed a bright thermal anomaly daily. Video images showed ash plumes rising to altitudes of 7-9.5 km (23,000-31,000 ft) a.s.l. and drifting 60 km NW at 1150 on 13 May. Later that day, at 1300, satellite images detected an ash plume that rose to altitudes of 5-8 km (16,400-26,000 ft) a.s.l. and drifted 90 km NW. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 April-6 May 2014 Cite this Report

KVERT reported that during 25 April-2 May lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images showed a bright thermal anomaly daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 April-29 April 2014 Cite this Report

KVERT reported that during 18-25 April lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images showed a bright thermal anomaly daily. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 April-22 April 2014 Cite this Report

KVERT reported that during 4-11 April lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images showed a bright thermal anomaly daily, and ash plumes that drifted SE at an altitude of 4 km (13,000 ft) a.s.l. during 16-17 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 April-15 April 2014 Cite this Report

KVERT reported that during 4-11 April lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. A bright thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 April-8 April 2014 Cite this Report

KVERT reported that during 28 March-4 April lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. A bright thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 March-1 April 2014 Cite this Report

KVERT reported that during 21-28 March lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. A bright thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 March-25 March 2014 Cite this Report

KVERT reported that during 14-21 March lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. A bright thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 March-18 March 2014 Cite this Report

KVERT reported that during 7-14 March lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. A bright thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 March-11 March 2014 Cite this Report

KVERT reported that during 28 February-7 March lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. A bright thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 February-4 March 2014 Cite this Report

KVERT reported that during 21-28 February lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. A bright thermal anomaly was detected daily in satellite images, and a gas-and-steam plume containing small amounts of ash drifted 135 km SE on 25 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 February-25 February 2014 Cite this Report

KVERT reported that during 14-21 February lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. On 19 February a gas-and-steam plume containing small amounts of ash rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted about 50 km SSE. On 25 February satellite images detected ash plumes that rose to altitudes of 4-4.5 km (13,100-14,800 ft) a.s.l. and drifted SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 February-18 February 2014 Cite this Report

KVERT reported that during 7-14 February lava-dome extrusion at Shiveluch was accompanied by ash explosions, incandescence, and fumarolic activity. A thermal anomaly was detected in satellite images on 9 and 12 February; cloud cover prevented views on the other days. Pyroclastic flow deposits on the SW flank from the 6 February were observed to be 12 km long. On 17 February at 1108 video data showed an ash plume rising to an altitude of 4 km (13,100 ft) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 February-11 February 2014 Cite this Report

KVERT reported that during 31 January-7 February a newer lava dome continued to extrude onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected in satellite images during 3-4 February. Based on interpretation of seismic data, a large explosion that started at 1245 on 6 February and ended at 0440 on 7 February generated an ash plume that rose to altitudes of 9-10 km (29,500-32,800) a.s.l. A satellite image acquired at 0705 on 7 February showed a large ash cloud (240 x 180 km) over the Sea of Okhotsk 320 km WNW at an altitude of 4-5 km (13,100-16,400) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 January-4 February 2014 Cite this Report

KVERT reported that during 24-31 January a newer lava dome continued to extrude onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images, and ash plumes rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. on 23 January and drifted N. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 January-28 January 2014 Cite this Report

KVERT reported that during 17-24 January a newer lava dome continued to extrude onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. A thermal anomaly was detected daily in satellite images, and ash plumes rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. during 20-21 January and drifted 300 km WNW during 20-22 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 January-21 January 2014 Cite this Report

KVERT reported that during 10-17 January a newer lava dome continued to extrude onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. A thermal anomaly was detected daily in satellite images, and ash plumes that rose to an altitude of 6 km (19,700) a.s.l. drifted 110 km ENE on 10 January. Explosions on 12 January generated ash plumes that rose to altitudes of 8-9 km (26,200-29,500 ft) a.s.l., and drifted 400 km SW during 12-13 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 January-14 January 2014 Cite this Report

KVERT reported that during 3-10 January a newer lava dome continued to extrude onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. A thermal anomaly was detected daily in satellite images, and ash plumes drifted 360 km SW and 278 km WNW on 7 and 9 January, respectively. On 12 January strong explosions generated ash plumes that rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. and drifted ESE. The next day a video camera recorded an ash plume from an explosion that again rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. The ash plume drifted 50 km WSW. According to a news report minor amounts of ash fell in Klyuchi Village, 50 km SW. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); RIA Novosti

1 January-7 January 2014 Cite this Report

KVERT reported that during 27 December 2013-2 January 2014 a newer lava dome extruded onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. A thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 December-31 December 2013 Cite this Report

KVERT reported that during 20-27 December a newer lava dome extruded onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. A thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 December-24 December 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 13-20 December a new lava dome extruded onto the NW part of Shiveluch's older lava dome. Moderate explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. Several strong explosions on 17 December generated ash plumes that rose to altitudes of 5.5-6 km (18,000-19,700 ft) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 December-17 December 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 6-13 December a new lava dome extruded onto the NW part of Shiveluch's older lava dome. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. On 17 December satellite images showed an ash plume drifting 50 km NW at altitudes of 4.5-5 km (14,800-16,400 ft) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 December-10 December 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 29 November-6 December a new lava dome extruded onto the NW part of Shiveluch's older lava dome. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 November-3 December 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 22-29 November a new lava dome extruded onto the NW part of Shiveluch's older lava dome. Moderate ash explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400) a.s.l. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. On 3 December activity increased and hot avalanches occurred continuously. Video data showed ash plumes rising to altitudes of 4-5 km (13,100-16,400) a.s.l. and drifting 20 km NW. A strong explosive event began at 1325 and generated ash plumes that rose to altitudes of 8-9 km (26,200-29,500 ft) a.s.l. and drifted NW. Pyroclastic flows descended the SW and NW flanks. The Aviation Color Code was raised to Red. Later that day KVERT noted that the strong explosive phase had ended; the Aviation Color Code was lowered back to Orange. An ash plume observed in satellite images was 200 km long and extended N. Ashfall was reported in Ivashka Village.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 November-26 November 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 15-22 November a viscous lava flow effused onto the N and NE flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A thermal anomaly was detected daily in satellite images. Explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400 ft) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 November-19 November 2013 Cite this Report

KVERT reported that during 8-15 November several strong explosions from Shiveluch generated ash plumes that rose to a maximum altitude of 7 km (24,600 ft) a.s.l. Viscous lava continued to effuse onto the N and NE flanks of the lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A daily thermal anomaly was detected in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 November-12 November 2013 Cite this Report

KVERT reported that during 1-8 November several strong explosions from Shiveluch generated ash plumes that rose to an maximum altitude of 7 km (24,600 ft) a.s.l. Ash plumes drifted more than 290 km SE. Viscous lava continued to effuse onto the N and NE flanks of the lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 October-5 November 2013 Cite this Report

KVERT reported that the current eruption continued through the week and included several strong ash eruptions that sent plumes to altitudes of 7-10 km (~22,000-33,000 ft) and drifted more than 200 km to the NE. Visual and satellite observations determined that lava extrusion continued on the NE and N flanks of the lava dome. This viscous block lava generated moderate ash explosions; fumarolic activity, hot avalanches, and incandescence at the summit also continued. A thermal anomaly was detected in daily satellite images.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 October-29 October 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 19-25 October a viscous lava flow effused onto the N and NE flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A thermal anomaly was detected daily in satellite images.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 October-22 October 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 11-18 October a viscous lava flow effused onto the N and NE flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A thermal anomaly was detected daily in satellite images.

At 1528 on 18 October video data showed ash plumes rising to altitudes of 9-10 km (29,500-32,800 ft) a.s.l. Several explosions during 1506-1528 generated ash plumes that rose to an altitude of 10 km (32,800 ft) a.s.l. and drifted SE. The Aviation Color Code was raised to Red. Video images showed ash plumes rising to 6-7 km (19,700-23,000 ft) a.s.l. at 1634, to altitudes of 7-7.5 km (23,000-24,600 ft) a.s.l. at 1708 and 1722, and to altitudes of 9 km (29,500 ft) a.s.l. at 1753 and 1759. KVERT announced that the Aviation Color Code was lowered to Orange at 2038. Continuous ash emissions produced plumes that rose 3-3.5 km (9,800-11.500 ft) a.s.l. and drifted S. The lava dome continued to grow.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 September-24 September 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 13-20 September a viscous lava flow effused onto the N and NW flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A thermal anomaly was detected in satellite images during 15-16 September; clouds obscured views on the other days. Video data showed that at 1454 on 20 September an ash plume rose to altitudes of 5-5.5 km (16,400-18,000) a.s.l. and drifted 20 km NE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 September-17 September 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 6-13 September a viscous lava flow effused onto the N and NW flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. At 1128 on 12 September video data showed an ash plume that rose to altitudes of 5-5.5 km (16,400-18,000 ft) a.s.l. and drifted 30 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 September-10 September 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 30 August-6 September a viscous lava flow effused onto the N and NW flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 August-3 September 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 23-30 August a viscous lava flow effused onto the N and NW flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 August-27 August 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 16-23 August a viscous lava flow effused onto the N and NW flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Explosions generated ash plumes that rose to altitudes of 3.5-4.5 km (11,500-14,800 ft) a.s.l. and drifted E and NE. A thermal anomaly was detected in satellite images during 16-18 and 20-23 August; cloud cover obscured views on 19 August. On 27 August video images showed an ash plume rising 3.5-4 km (11,500-13,100 ft) a.sl. and drifting 30 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 August-20 August 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 9-17 August a viscous lava flow effused onto the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite images detected a thermal anomaly during 9-12, 14, and 16-17 August; cloud cover prevented observations on the other days. Explosions generated ash plumes that rose to altitudes of 5-7 km (16,400-23,000 ft) a.s.l. and drifted E and NE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 August-13 August 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 2-9 August a viscous lava flow effused on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite images detected a thermal anomaly during 3-6, 8, and 10-11 August. Explosions during 4-5 August generated ash plumes that rose to altitudes of 5-7 km (16,400-23,000 ft) a.s.l. and drifted SSE. A video camera recorded ash plumes that rose to altitudes of 7-7.5 km (23,000-24,600 ft) a.s.l. during 10-11 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 July-6 August 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 26 July-2 August a viscous lava flow effused on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite images detected a daily thermal anomaly.

A strong explosion at 2255 on 26 July generated ash plumes that rose as high as 10 km (23,800 ft) a.s.l. and drifted 520 km SE. Pyroclastic flows traveled 5 km. An ash cloud 15 x 7 km was observed in satellite images about 60 km SE of the volcano on 29 July. At 1707 on 4 August video images showed an ash plume rising to altitudes of 4.5-5 km (14,800-16,400 ft) a.s.l. and drifting 50 km E. The next day the seismic network detected an explosion at 1604; video images showed an ash plume rising to altitudes of 6.5-7 km (21,300-23,000 ft) a.s.l. and drifting 50 km ESE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 July-30 July 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 19-26 July a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite images detected a daily thermal anomaly. Based on analyses of satellite images, the Tokyo VAAC reported a possible eruption on 27 July. Ash was detected in images the next day. The VAAC also noted that, according to the Kamchatka Branch of Geophysical Services (KBGS; Russian Academy of Sciences), ash plumes rose to altitudes of 6.1-6.4 km (20,000-21,000 ft) a.s.l. on 27 and 29 July. KVERT reported that at 1317 on 29 July an explosion was observed by a web camera. An ash cloud detected in satellite images rose to an altitude of 3.5 km (11,500 ft) a.s.l. and drifted 60 km ESE; the cloud was 15 km long and 7 km wide. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

17 July-23 July 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 12-19 July a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Based on notices from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 15 July an ash plume rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted E. KVERT noted that satellite images detected a thermal anomaly on 15, 17, and 18 July; cloud cover prevented observations on the other days. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

10 July-16 July 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 5-12 July a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Ash plumes as high as 4.5 km (14,800 ft) a.s.l. were observed during 5-6 July. Satellite images detected a daily thermal anomaly. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 July-9 July 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 28 June-5 July a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Ash plumes as high as 6 km (19,700 ft) a.s.l. were observed during 27-28 June and 3 July. Satellite images detected a daily thermal anomaly, and ash plumes that drifted 35 km SE on 3 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 June-2 July 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 21-28 June a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity.

The seismic network detected a strong explosive eruption that occurred on 27 June from 0710 to 0800. The Aviation Color Code was raised to Red. Ash plumes drifted SE and SW, likely at altitudes of 10-12 km (33,000-39,400 ft) a.s.l. About 2 mm of red ash fell in Klyuchi Village, 50 km SW; ashfall was also reported in Lazo Village. Later that day the Alert Level was lowered back to Orange. Two ash explosions that occurred on 28 June at 0506 and 1001 produced ash plumes that rose to altitudes of 7 and 6 km (23,000 and 19,700 ft) a.s.l., respectively.

Based on analyses of satellite imagery, notices from Yelizovo Airport (UHPP), and the Kamchatka Branch of Geophysical Services (KBGS; Russian Academy of Sciences), the Tokyo VAAC reported that during 29-30 June an ash plume rose to an altitude of 5.5-6.4 km (18,000-21,000 ft) a.s.l. and drifted E and SE.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 June-25 June 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 14-21 June a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. On 22 June an explosion was detected by the seismic network at 1246 and lasted about four minutes. A second explosion at 1310 produced an ash plume observed with the web camera that rose to an altitude of 6 km (19,700 ft) a.s.l. and drifted NW. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 June-18 June 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 7-14 June a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. Based on notices from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 14 and 16 June ash plumes rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted E. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

5 June-11 June 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 31 May-7 June a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. On 10 June the seismic network detected an explosive event at 0902 that lasted 6.5 minutes, and indicated that an ash plume possibly rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 May-4 June 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 24-31 May a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 May-28 May 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 17-24 May a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 May-21 May 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 10-16 May a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Based on analyses of satellite imagery and notices from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 18 May ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted NE.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

8 May-14 May 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 3-10 May a viscous lava flow effused on the NW and NE flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 May-7 May 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 26 April-3 May a viscous lava flow effused on the NW and NE flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Based on analyses of satellite imagery and notices from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 5 May an ash plume rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted E.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

24 April-30 April 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 19-26 April a viscous lava flow effused on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 April-23 April 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 12-19 April a viscous lava flow effused on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. Based on analyses of satellite imagery, the Tokyo VAAC reported that on 22 April ash plumes rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted NE. Subsequent images that day showed that the ash had dissipated. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

10 April-16 April 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 5-12 April a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 April-9 April 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 29 March-5 April a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. An explosion on 5 April observed by video generated an ash plume that rose to altitudes of 5.5-6 km (16,400-19,700 ft) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 March-2 April 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 22-29 March a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 March-26 March 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 15-22 March a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 March-19 March 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 8-15 March a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 March-12 March 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 28 February-7 March a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. A single explosion on 4 March produced an ash plume that rose to an altitude of 7 km (23,000 ft) a.s.l. Collapses of hot material on 6 March generated ash plumes that rose to an altitude of 5 km (16,400 ft) a.s.l. and drifted 200 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 February-5 March 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 22 February-2 March a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. Based on video images, KVERT reported that explosions produced a gas-and-ash plume that rose to an altitude of 9 km (29,500 ft) a.s.l. on 4 March, and an ash plume rose 4 km (13,100 ft) a.s.l. and drifted 20 km SE on 6 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 February-26 February 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 15-22 February a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 February-19 February 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 8-15 February a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 February-12 February 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 1-8 February a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 January-5 February 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 25 January-1 February a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 January-29 January 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 18-25 January a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 January-22 January 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 11-18 January a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 January-15 January 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 4-11 January a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 January-8 January 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 28 December-4 January a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 December-1 January 2013 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 21-28 December a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 December-25 December 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 14-21 December a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 December-18 December 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 7-14 December a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 December-11 December 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 30 November-7 December a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a thermal anomaly on the lava dome during 29 November and 3-6 December; cloud cover obscured views on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 November-4 December 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 23-30 November a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a thermal anomaly on the lava dome during 23-26 and 29 November; cloud cover obscured views on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 November-27 November 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 16-23 November a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a thermal anomaly on the lava dome during 17-18 and 20-22 November; cloud cover obscured views on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 November-20 November 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 9-16 November a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 November-13 November 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 2-9 November a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. During 10-12 November weak seismicity was registered and satellite imagery showed a thermal anomaly. Video images recorded gas-and-steam activity, which contained ash on 12 November. The Aviation Color Code remained at Orange.

Based on analyses of satellite imagery and notices from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 12 November ash plumes rose to altitudes of 3-4.3 km (10,000-14,000 ft) a.s.l. and drifted S.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

31 October-6 November 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 26 October-2 November a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 October-30 October 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 19-26 October a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a thermal anomaly on the lava dome during 20-23 October; clouds prevented views on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 October-23 October 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 12-19 October a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a thermal anomaly on the lava dome during 12-16 October; clouds prevented views on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 October-16 October 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 5-12 October a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed ash plumes drifting 360 km SE during 4-6 October, and a thermal anomaly on the lava dome during 5-7 October. A plume detected by the seismic network and observed rose to altitudes of 6-7 km (19,700-23,000 ft) a.s.l. on 6 October. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 October-9 October 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 28 September-5 October a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a thermal anomaly on the lava dome on 28 September and during 1-3 October. Based on analyses of satellite imagery, notices from Yelizovo Airport (UHPP), and information from KVERT, the Tokyo VAAC reported that on 5 October ash plumes rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted SE. The next day ash plumes rose to an altitude of 7 km (23,000 ft) a.s.l and again drifted SE. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

26 September-2 October 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 21-28 September a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a thermal anomaly on the lava dome on 21, 23, and 27 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 September-25 September 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 14-21 September a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, and was accompanied by hot avalanches and fumarolic activity. A strong explosion on 18 September generated an ash plume that rose to an altitude of 8 km (26,300 ft) a.s.l. An ash plume rose to an altitude of 3.5 km (11,500 ft) a.s.l. on 20 September. Satellite imagery showed a thermal anomaly on the lava dome on 14 and 19 September, and an ash plume drifting 2,000 km SE during 17-20 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 September-18 September 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 7-14 September a viscous lava flow continued to effuse on the NW flank of Shiveluch's lava dome, and was accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a thermal anomaly over the lava dome on 9, 11, and 13 September; cloud cover prevented observations on the other days, and during 15-16 September. Seismicity increased on 18 September. At 1119 observers noted that an ash plume rose to an altitude of 8 km (26,200 ft) a.s.l. and drifted 137 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 September-11 September 2012 Cite this Report

Based on visual observations and analyses of satellite data, KVERT reported that during 31 August-7 September a viscous lava flow continued to effuse on the NE flank of Shiveluch's lava dome, and was accompanied by hot avalanches and fumarolic activity. Satellite imagery showed a thermal anomaly over the lava dome during 31 August and 4-5 September; cloud cover prevented observations on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 August-4 September 2012 Cite this Report

KVERT reported that during 24-31 August a viscous lava flow was active on the NE flank of Shiveluch's lava dome and was accompanied by hot avalanches. Satellite imagery showed a thermal anomaly over the lava dome during 24-26 August; cloud cover prevented observations on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 August-28 August 2012 Cite this Report

KVERT reported that during 17-24 August a viscous lava flow was active on the NE flank of Shiveluch's lava dome and was accompanied by hot avalanches. The summit of the dome was incandescent; satellite imagery showed a thermal anomaly over the area during 17-24 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 August-21 August 2012 Cite this Report

KVERT reported that during 10-18 August weak seismic activity was detected at Shiveluch. Observers noted gas-and-steam activity during 15-17 August; weather conditions prevented observations of the volcano on the other days. Satellite imagery showed a thermal anomaly on the lava dome during 10, 12-13, and 18-19 August. Seismic activity increased to moderate levels and hot avalanches were observed during 19-20 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 August-14 August 2012 Cite this Report

KVERT reported that during 3-10 August weak seismic activity was detected at Shiveluch. Cloud cover prevented ground-based observations; however, a thermal anomaly on the volcano was detected daily in satellite imagery. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 August-7 August 2012 Cite this Report

KVERT reported that during 27 July-6 August explosive activity was detected at Shiveluch; a strong explosion detected on 27 July possibly produced an ash plume that rose 10 km (32,800 ft) a.s.l. Satellite imagery showed a daily thermal anomaly on the lava dome. Observers noted gas-and-steam activity during 28-29 and 21 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 July-31 July 2012 Cite this Report

KVERT reported that during 20-29 July explosive activity was detected at Shiveluch and observers noted gas-and-steam activity. Satellite imagery showed a thermal anomaly on the lava dome during 20, 22-26, and 28-29 July. Based on information from KEMSD and analyses of satellite images, the Tokyo VAAC reported that on 27 July an eruption produced an ash plume that rose to an altitude of 10.1 km (33,000 ft) a.s.l. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

18 July-24 July 2012 Cite this Report

KVERT reported that during 13-21 July explosive activity at Shiveluch continued. Observers noted gas-and-steam activity during 12-13, 15-18, 21, and 23 July; weather conditions prevented observations of the volcano on the other days. Satellite imagery showed a thermal anomaly on the lava dome during 13-20 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 July-17 July 2012 Cite this Report

KVERT reported that during 6-13 July explosive activity at Shiveluch continued and seismic data indicated that possible ash plumes rose to an altitude of 4.5 km (14,700 ft) a.s.l. Observers noted gas-and-steam activity on 11 and 16 July; weather conditions prevented observations of the volcano on the other days. Satellite imagery showed a thermal anomaly on the lava dome during 7-12 and 14-16 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 July-10 July 2012 Cite this Report

KVERT reported that during 29 June-6 July explosive activity at Shiveluch continued and seismic data indicated that possible ash plumes rose to an altitude of 4.7 km (15,400 ft) a.s.l. Observers noted ash plumes rising to an altitude of 3.5 km (11,500 ft) a.s.l. on 29 June; weather conditions prevented observations of the volcano on the other days. Satellite imagery showed a thermal anomaly on the lava dome during 28-30 June and 7-10 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 June-3 July 2012 Cite this Report

KVERT reported that during 22-29 June explosive activity at Shiveluch continued and seismic data indicated that possible ash plumes rose to an altitude of 9.5 km (31,100 ft) a.s.l. Observers indicated strong gas-and-steam activity on 22 June and noted ash plumes rising to an altitude of 5.3 km (17,400 ft) a.s.l. during 24-26 June. Weather conditions prevented observations of the volcano on the other days. Satellite imagery showed a daily thermal anomaly on the lava dome, and gas-and-steam plumes that drifted 152 km SE. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 June-26 June 2012 Cite this Report

KVERT reported that during 15-22 June explosive activity at Shiveluch continued. Visual observations revealed strong gas-and-steam activity on 15, 17, and 21 June; weather conditions prevented observations on the other days. A thermal anomaly on the lava dome was detected in satellite imagery during 15-17, 21, and 24 June. On 24 June video data showed ash plumes that rose to an altitude of 5.3 km (17,400 ft) a.s.l. Based on information from Yelizovo Airport (UHPP) and KEMSD, the Tokyo VAAC reported that ash plumes rose to altitudes of 5.2-9.8 km (17,000-32,000 ft) a.s.l. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

13 June-19 June 2012 Cite this Report

KVERT reported that during 8-15 June explosive activity at Shiveluch continued. During 11-13 June a thermal anomaly on the lava dome was detected in satellite imagery and ground-based observers noted strong gas-and-steam activity. Seismic data indicated that a possible ash plume rose to an altitude of 8 km (26,200 ft) a.s.l. Meteorological cloud cover prevented observations of the volcano on the other days. Based on analyses of seismic data and information from KEMSD, the Tokyo VAAC reported that an eruption on 15 June produced an ash plume that rose to an altitude of 8.2 km (27,000 ft) a.s.l. Ash was not detected in satellite images. Based on analysis of seismic data, KVERT reported that on 18 June possible ash plumes rose to altitudes of 3.4-4 km (11,200-13,100 ft) a.s.l. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

6 June-12 June 2012 Cite this Report

KVERT reported that during 1-8 June explosive activity at Shiveluch continued. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the active crater, accompanied by fumarolic activity. Observers noted that ash plumes rose to an altitude of 8.5 km (28,000 ft) a.s.l. on 2 June. Satellite imagery showed a thermal anomaly over the lava dome during 31 May and 1-4 June, and ash plumes drifting 152 km S and 250 km S and ENE during 2-3 June. Seismic data indicated that possible ash plumes rose to an altitude of 8 km (26,200 ft) a.s.l. on 5 June. The Aviation Color Code remained at Orange.

Based on analyses of seismic data, the Tokyo VAAC reported that a possible eruption on 6 June produced an ash plume that rose to an altitude of 8.2 km (27,000 ft) a.s.l. Ash was not detected in satellite images.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

30 May-5 June 2012 Cite this Report

KVERT reported that during 25 May-1 June explosive activity at Shiveluch continued. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the active crater, and was accompanied by fumarolic activity and lava-dome incandescence. Observers noted that ash plumes rose to an altitude of 9 km (29,500 ft) a.s.l. on 25 and 27 May, and to an altitude of 6 km (19,700 ft) a.s.l. during 29-30 May. Satellite imagery showed ash plumes drifting 555 km SW, SE, and E during 25-30 May, and a thermal anomaly over the lava dome during 26-29 May. The Aviation Color Code remained at Orange.

Based on analyses of satellite images, the Tokyo VAAC reported that a possible eruption on 2 June produced an ash plume that rose to an altitude of 9.1 km (30,000 ft) a.s.l. and drifted S. Subsequent images during 2-3 June showed ash.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

23 May-29 May 2012 Cite this Report

KVERT reported that during 18-25 May explosive activity at Shiveluch continued and a thermal anomaly was observed daily in satellite imagery. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the active crater, and was accompanied by fumarolic activity and lava-dome incandescence. On 19 May seismic data indicated that possible ash plumes rose to an altitude of 9.5 km (31,200 ft) a.s.l. On 20 May observers noted ash plumes rising to altitudes of 8-9 km (26,200-29,500 ft) a.s.l.; satellite images showed ash plumes drifting 410 km SW. The Aviation Color Code remained at Orange.

Based on information from KVERT and KEMSD, and analyses of satellite images, the Tokyo VAAC reported that during 26-29 May ash plumes from eruptions and possible eruptions rose to altitudes of 7-9.1 km (23,000-30,000 ft) a.s.l. and drifted SE, W, and SW.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

16 May-22 May 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 11-18 May. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the active crater, and was accompanied by fumarolic activity and lava-dome incandescence. Satellite imagery during 10-12 and 15-16 May showed a thermal anomaly on the lava dome. On 12 May observers reported that ash plumes rose to an altitude of 8 km (26,200 ft) a.s.l. and satellite imagery showed an ash plume drifting more than 800 km E.

Based on information from KVERT and analyses of satellite images, the Tokyo VAAC reported that on 20 May an ash plume rose to an altitude of 9.1 km (30,000 ft) a.s.l. and drifted SW. Images the next day showed that the ash had dissipated.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

9 May-15 May 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 4-11 May. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the active crater and was accompanied by fumarolic activity. Seismic data and visual observations showed that ash plumes rose to altitudes of 10 and 5 km (32,800 and 16,400 ft) a.s.l. on 5 May and during 6-8 May, respectively. Satellite imagery showed a thermal anomaly on the lava dome during 4-5 and 8-10 May. Ash plumes drifted 800 km SE on 5 May, and an ash cloud 95 km SE of the volcano was observed on 7 May.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 May-8 May 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 27 April-4 May. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption and was accompanied by fumarolic activity. Seismic data and visual observations showed that ash plumes rose to altitudes of 4 and 5.4 km (13,200 and 17,800 ft) a.s.l. on 26 April and 1 May, respectively. Satellite imagery showed a weak thermal anomaly on the lava dome during 28-29 April and on 1 and 3 May. Explosions on 1 May produced ash plumes that rose to an altitude of 5 km (16,400 ft) a.s.l.; an ash cloud was observed in satellite imagery drifting 270 km NE that same day.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 April-1 May 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 20-27 April. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption and was accompanied by fumarolic activity. Seismic data and visual observations showed that ash plumes rose to an altitude greater than 10 km (32,800 ft) a.s.l. on 24 April and were slight on the other days. Satellite imagery showed a weak thermal anomaly on the lava dome during 20-22 April, and ash plumes that drifted 396 km NE on 24 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 April-24 April 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 13-20 April. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption and was accompanied by fumarolic activity. Observers reported that ash plumes rose to altitudes of 6.5-7.5 km (21,300-24,600 ft) a.s.l. during 16-17 April and to altitudes of 4-5 km (13,100-16,400 ft) a.s.l. on the other days. Satellite imagery showed a weak thermal anomaly daily on the lava dome, and ash plumes that drifted 120 km N, NE, and E during 14-15 and 17-18 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 April-17 April 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 7-13 April. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Satellite imagery showed a weak thermal anomaly daily on the lava dome, and ash plumes that drifted 210 km SW and SE on 6, 8, and 11 April. Seismic data indicated that ash plumes potentially rose to an altitude of 7.7 km (25,000 ft) a.s.l. during 7-8 and 10-12 April, and to an altitude of 4.5 km (14,800 ft) a.s.l. on the other days. Observers confirmed that an ash plume rose to an altitude of 5 km (16,400 ft) a.s.l. on 8 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 April-10 April 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 29 March-6 April. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Visual observations revealed that ash plumes rose to an altitude of 4 km (13,100 ft) a.s.l. on 30 March and 3 April. Seismic data indicated that ash plumes potentially rose to an altitude of 6.6 km (21,600 ft) a.s.l. every day. Satellite imagery showed a weak thermal anomaly on the lava dome during 29-31 March and 3 April, and ash plumes that drifted 114 km W, E, and NE during 29-30 March and 3 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 March-3 April 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 23-30 March. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. During 25-26 and 28 March ash plumes rose to an altitude of 7 km (23,000 ft) a.s.l. Satellite imagery showed a weak thermal anomaly daily on the volcano and ash plumes that drifted 192 km E and SE during 25-28 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 March-27 March 2012 Cite this Report

KVERT reported that explosive activity at Shiveluch continued during 16-23 March. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. During 15-21 March ash plumes rose to altitudes of 5-6 km (16,400-19,700 ft) a.s.l. Satellite imagery showed plumes drifting 194 km E and SE during 16-18 March and a weak thermal anomaly on the volcano during 16-18 and 20 March. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 March-20 March 2012 Cite this Report

KVERT reported that activity at Shiveluch increased on 10 March and during 10-14 March daily explosions produced ash plumes that rose to altitudes of 3-5 km (10,000-16,400 ft) a.s.l. During 10-16 March ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Satellite imagery showed a thermal anomaly on the volcano and ash plumes that drifted 64 km NE and SE during 10-11 and 13 March. The Aviation Color Code remained at Orange.

Based on information from Yelizovo Airport (UHPP) and satellite images, the Tokyo VAAC reported that an ash plume rose to an altitude of 5.2 km (17,000 ft) a.s.l. and drifted SE.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

7 March-13 March 2012 Cite this Report

KVERT reported that seismic activity at Shiveluch was low during 2-9 March. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed during 2 and 5-8 March; cloud cover prevented observations on the other days. Satellite imagery showed a weak thermal anomaly over the lava dome during 3, 5, and 7-8 March. The Aviation Color Code remained at Orange.

Based on information from KVERT, the Tokyo VAAC reported that on 10 March an ash plume rose to an altitude of 5.2 km (17,000 ft) a.s.l. and drifted NE. Yelizovo Airport (UHPP) reported that an ash plume rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted SW.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

29 February-6 March 2012 Cite this Report

KVERT reported that seismic activity at Shiveluch was low during 23 February-2 March. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Seismic activity increased on 28 February and hot avalanches likely occurred at the lava dome. Satellite imagery showed a weak thermal anomaly over the lava dome during 23-26 February. Moderate fumarolic activity at the lava dome was observed during 1-2 March; cloud cover prevented observations on the other days. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 February-28 February 2012 Cite this Report

KVERT reported that during 17-24 February low levels of seismic activity were detected at Shiveluch and satellite imagery showed a weak thermal anomaly. According to visual and satellite observations, a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed during 19-23 February; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 February-21 February 2012 Cite this Report

KVERT reported that low levels of seismic activity were detected at Shiveluch during 10-17 February. Satellite imagery showed a weak thermal anomaly during 10-11 and 15-16 February. Ground-based observers noted that a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed on 14 February; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 February-14 February 2012 Cite this Report

KVERT reported that low levels of seismic activity were detected at Shiveluch 3-10 February. Satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption. Moderate fumarolic activity at the lava dome and occasional hot avalanches were observed all week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 February-7 February 2012 Cite this Report

KVERT reported that low levels of seismic activity were detected at Shiveluch during 26 January-3 February. Satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption. Moderate fumarolic activity at the lava dome and occasional hot avalanches were observed all week. Weak ash explosions from the lava dome were reported from the SE flank on 26 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 January-31 January 2012 Cite this Report

KVERT reported that mostly low levels of seismic activity were detected at Shiveluch during 20-27 January, though seismicity was higher during 22-23 January. Satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption. Moderate fumarolic activity at the lava dome and occasional hot avalanches were observed during 25-26 January; clouds prevented observations on the other days of the week. Ash plumes rose to altitudes of 5-6 km (16,400-19,700 ft) a.s.l. and drifted 174 km NE on 23 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 January-24 January 2012 Cite this Report

KVERT reported that low levels of seismic activity were detected at Shiveluch during 13-20 January, and on 14 January ash plumes were observed. Satellite imagery showed a thermal anomaly over the lava dome every day except on 16 January. Ground-based observers noted that a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption and hot avalanches from the lava flow were occasionally observed at night with a web camera. Moderate fumarolic activity at the lava dome was observed during 13-14 and 17-18 January. The Aviation Color Code remained at Orange.

Based on satellite observations, the Tokyo VAAC reported that on 22 January a possible eruption produced a plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted NW; subsequent satellite images showed that ash was present. Based on information from satellite images and KVERT, ash plumes rose to an altitude of 5.2 km (17,000 ft) a.s.l. on 23 January and dissipated the next day.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

11 January-17 January 2012 Cite this Report

KVERT reported that low levels of seismic activity were detected at Shiveluch during 6-13 January. Satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption and hot avalanches from the lava flow were observed at night with a web camera. Moderate fumarolic activity at the lava dome was observed all week except on 10 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 January-10 January 2012 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 30 December-6 January. Satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater that was formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed during 30-31 December and on 2 and 4 January; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 December-3 January 2012 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 23-30 December. Satellite imagery showed a daily thermal anomaly over the lava dome and gas-and-steam plumes drifting 30 km N and SE on 24 and 27 December, respectively. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed during 22-24 December; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 December-27 December 2011 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 16-23 December and a large thermal anomaly over the volcano was observed in satellite imagery. Seismic data suggested that possible ash plumes rose to an altitude of 5 km (17,400 ft) a.s.l. Gas-and-steam plumes containing ash drifted 250 km S during 19-20 December. Explosions produced ash plumes that rose to an altitude of 6 km (19,700 ft) a.s.l. on 19 December. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed during 18-21 December; cloud cover prevented observations on the other days. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 December-20 December 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 9-16 December. Satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed during 10-11 and 13-15 December; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Based on information from Yelizovo Airport (UHPP) and satellite images, the Tokyo VAAC reported that on 19 December an eruption produced a plume that rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted E. On 20 December an ash plume drifted SE at an altitude of 4.3 km (14,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

7 December-13 December 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 2-9 December, and satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Moderate fumarolic activity at the lava dome was observed during 3-6 December; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 November-6 December 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 25 November-2 December, and satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. A gas-and-steam plume detected in satellite imagery drifted 22 km NW on 26 November. Moderate fumarolic activity at the lava dome was observed during 28-29 November; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 November-29 November 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 18-25 November, and satellite imagery showed a daily thermal anomaly over the lava dome. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. An ash plume detected in satellite imagery drifted 21 km W on 18 November. Strong fumarolic activity at the lava dome was observed on 18, 21, and 24 November; clouds prevented observations on the other days of the week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 November-22 November 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 11-18 November, and indicated that possible ash plumes rose to a maximum altitude of 4.5 km (14,800 ft) a.s.l. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Strong fumarolic activity at the lava dome was observed during 13-14 November; cloud cover prevented observations on the other days. Satellite imagery showed a thermal anomaly over the lava dome during 11-14 and 17 November and gas-and-steam plumes containing ash drifted 100 km E on 14 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 November-15 November 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 4-11 November, and indicated that possible ash plumes rose to a maximum altitude of 4.5 km (14,800 ft) a.s.l. Ground-based observers noted that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption. Strong fumarolic activity at the lava dome was observed during 2-3 and 5-9 November; cloud cover prevented observations on the other days. Satellite imagery showed a daily thermal anomaly over the lava dome and gas-and-steam plumes containing small amounts of ash that drifted 25 km E on 5 November. The Aviation Color Code remained at Orange.

Based on information from KVERT, the Tokyo VAAC reported that on 14 November an ash plume drifted E at an altitude of 3 km (10,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

2 November-8 November 2011 Cite this Report

KVERT reported strong seismic activity at Shiveluch during 28 October-4 November, and indicated that possible ash plumes rose to an altitude of 7.8 km (25,600 ft) a.s.l. on 29 October and to lower altitudes on other days. Ground-based observers noted strong fumarolic activity at the lava dome during 29 October-1 November; cloud cover prevented observations on the other days. Satellite imagery showed a large daily thermal anomaly over the lava dome and gas-and-steam plumes containing small amounts of ash that drifted 150 km E and SE during 31 October and 1-2 November. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 October-1 November 2011 Cite this Report

KVERT reported strong seismic activity at Shiveluch during 21-23 October and indicated that possible ash plumes rose to altitudes of 7.1-10.6 km (23,300-34,800 ft) a.s.l. Technical reasons prevented seismic data collection during 24-28 October. Ground-based observers noted hot avalanches in the lava dome area during 23-26 October; cloud cover prevented observations on the other days. Satellite imagery showed a large daily thermal anomaly over the lava dome and gas-and-steam plumes that drifted 170 km SE on 24 and 25 October. The Aviation Color Code remained at Orange.

Based on information from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 31 October an ash plume rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted E.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

19 October-25 October 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 13-18 October and indicated that possible ash plumes rose to altitudes of 8-10.5 km (26,200-34,400 ft) a.s.l. Technical reasons prevented seismic data collection during 19-21 October. Ground-based observers noted hot avalanches in the lava dome area during 13-16 October, and that plumes from those avalanches rose to an altitude of 6 km (19,700 ft) a.s.l. Satellite imagery showed a large daily thermal anomaly over the lava dome and ash plumes that drifted 75 km E on 14 and 16 October. The Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 23 October an eruption produced a plume that rose to an altitude of 7.3 km (24,000 ft) a.s.l. The altitude was based on seismic analysis. An eruption on 24 October noted by KVERT produced a plume that rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted SE.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

12 October-18 October 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 7-14 October. Ground-based observers noted hot avalanches from the lava dome and that plumes from those avalanches rose to an altitude of 5 km (16,400 ft) a.s.l. An ash explosion on 8 October produced an ash plume that rose to an altitude of 7 km (23,000 ft) a.s.l. Satellite imagery showed a daily thermal anomaly over the lava dome and ash plumes that drifted 160 km E on 6 and 8 October. The Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that during 15-18 October eruptions produced plumes that rose to altitudes of 6.4-10.4 km (21,000-34,000 ft) a.s.l. An eruption on 16 October noted by KVERT produced a plume that rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted SE.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

5 October-11 October 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 30 September-7 October. Ash plumes rose to altitudes of 6-9 km (19,700-30,000 ft) a.s.l. during 3-5 October, followed by new lava-dome extrusion. Seismicity indicated that possible ash plumes rose to altitudes of 4.5-5 km (14,800-16,400 ft) a.s.l. during 5-6 October; ground-based observers noted that ash plumes rose to an altitude of 5 km (16,400 ft) a.s.l. on those same days. Satellite imagery showed a large and bright thermal anomaly on the lava dome on 5 October and ash plumes that drifted 100 km NE on 6 October. The Aviation Color Code was lowered to Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 8 October an eruption produced a plume that rose to an altitude of 7 km (23,000 ft) a.s.l. and drifted E. Subsequent satellite images that day showed that ash was present and then had dissipated. An eruption on 10 October produced a plume that rose to an altitude of 7.3 km (24,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

28 September-4 October 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 23-30 September, and indicated that possible ash plumes rose to an altitude of 4.6 km (15,100 ft) a.s.l. during 23 and 26-27 September. Ground-based observers noted that ash plumes rose to altitudes of 5.5 and 4.5 km (18,000 and 14,800 ft) a.s.l. on 23 and 27 September, respectively. Ash plumes observed in satellite imagery during 23-24 September drifted 45 km E. Seismicity increased on 3 October. Ash plumes rose to altitudes of 6-9 km (19,700-29,500 ft) a.s.l. during 3-5 October. Ground-based observers noted on 5 October a brightly incandescent lava dome, which was also detected as a large and bright thermal anomaly in satellite imagery. The Aviation Color Code was raised to Red.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 September-27 September 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 16-23 September. A thermal anomaly on the volcano was also observed in satellite imagery on 15 and 18 September. Ground-based observers noted fumarolic activity during 18-20 September. The Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 24 September an eruption produced a plume that rose to an altitude of 6.4 km (21,000 ft) a.s.l. and drifted E. Subsequent images that day showed that the ash had dissipated.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

14 September-20 September 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 9-15 September, and indicated that possible ash plumes rose to altitudes of 6.5 km (14,100 ft) and 10.3 km (33,800 ft) a.s.l. on 9 and 11 September, respectively. Ground-based observers noted ash plumes that rose to an altitude of 4.7 km (15,400 ft) a.s.l. on 9 September and fumarolic activity on 9 and 14 September. A thermal anomaly on the volcano was also observed in satellite imagery on 9 and 13 September. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 September-13 September 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 2-9 September, and indicated that possible ash plumes rose to an altitude of 4.3 km (14,100 ft) a.s.l. during 2-3 September. Ground-based observers noted fumarolic activity during the week, and an ash plume that rose to an altitude of 4 km (19,700 ft) a.s.l. on 3 September. Also on 3 September an ash cloud 19 by 11 km was observed in satellite imagery drifting 20 km E. A thermal anomaly on the volcano was also observed in satellite imagery on 5 and 7 September. The Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 10 September an eruption produced a plume that rose to an altitude of 6.7 km (22,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

31 August-6 September 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 26 August-1 September, and indicated that possible ash plumes rose to an altitude of 8.6 km (28,200 ft) a.s.l. on 28 August. Ground-based observers noted fumarolic activity during 26, 28, and 30-31 August, and an ash plume that rose to an altitude of 6 km (19,700 ft) a.s.l. on 28 August. A thermal anomaly on the volcano was observed in satellite imagery on 29 and 31 August. The Aviation Color Code remained at Orange.

Based on information from Yelizovo Airport (UHPP) and KVERT, the Tokyo VAAC reported that on 3 September an ash plume rose to an altitude of 5.8 km (19,000 ft) a.s.l. and drifted NE. Subsequent images that day showed that the ash had dissipated.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

24 August-30 August 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 19-26 August, and indicated that possible ash plumes rose to an altitude of 8.2 km (26,900 ft) a.s.l. on 23 August. A thermal anomaly on the volcano was observed in satellite imagery on 18, 21, and 25 August. The Aviation Color Code remained at Orange.

Based on information from KEMSD and analyses of satellite imagery, the Tokyo VAAC reported that on 29 August an eruption produced a plume that rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted E. Subsequent images that day showed that continuing ash emissions had later dissipated. According to a news article, international flights were re-routed that day due to ash plumes that reportedly rose to an altitude of 8.6 km (28,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC); IOL News

17 August-23 August 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 12-19 August, and indicated that possible ash plumes rose to an altitude of 6.8 km (22,300 ft) a.s.l. on 13 August and to an altitude of 7.8 km (25,600 ft) a.s.l. on 15 August. Ash plumes may have risen to an altitude of 5 km (16,400 ft) a.s.l. on the other days. Gas-and-steam plumes containing ash observed in satellite imagery drifted 30 km SW on 12 August. Ground-based observers noted that an ash plume rose to an altitude of 6.5 km (21,300 ft) a.s.l. on 16 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 August-16 August 2011 Cite this Report

KVERT reported that seismicity at Shiveluch was moderate during 5-12 August. Seismic data indicated that possible ash plumes rose to an altitude of 6.7 km (22,000 ft) a.s.l. on 8 August, to an altitude of 6 km (19,700 ft) a.s.l. on 10 August, and to altitudes of 4-5.5 km (13,100-18,000 ft) a.s.l. on other days. Ground-based observers indicated that ash plumes rose to an altitude of 7 km (23,000 ft) a.s.l. on 6 August. Satellite imagery showed a daily thermal anomaly on the lava dome, and ash plumes that drifted 60 and 20 km SE on 6 and 10 August, respectively. The Aviation Color Code remained at Orange.

Based on analysis of satellite imagery, the Tokyo VAAC reported that on 13 August a possible eruption produced a plume that rose to an altitude of 4.3 km (14,000 ft) a.s.l. and drifted W. Ash was seen in subsequent satellite images that same day. An eruption on 15 August produced a plume that rose to an altitude of 7.9 km (26,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

3 August-9 August 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 29 July-5 August. Satellite imagery showed a thermal anomaly on the lava dome during 30 July and 1-3 August. Ground-based observers indicated that ash plumes rose to an altitude of 7 km (23,000 ft) a.s.l. on 1 August and 4 km (13,100 ft) a.s.l. on 2 August. Satellite images from 1 August showed an ash plume drifting 24 km S. A strong dust storm at the volcano was observed on 3 August; a dust plume detected in satellite imagery drifted 160 km SE. The Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 6 August an eruption produced a plume that rose to an altitude of 7 km (23,000 ft) a.s.l. and drifted E. Ash was seen in subsequent satellite images that same day. An eruption on 9 August produced a plume that rose to an altitude of 6.7 km (22,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

27 July-2 August 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 22-29 July and indicated that possible ash plumes rose to an altitude of 4.7 km (15,400 ft) a.s.l. during 23 and 25-27 July. Satellite imagery showed a thermal anomaly on the lava dome on 22 July; cloud cover prevented observations on other days. Ground-based observers noted fumarolic activity on 24 July. The Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 1 August an eruption produced a plume that rose to an altitude of 7 km (23,000 ft) a.s.l. and drifted E. Ash was seen in subsequent satellite images that same day.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

20 July-26 July 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 15-22 July and indicated that possible ash plumes rose to an altitude of 4 km (13,100 ft) a.s.l. during 14-15 and 20 July. Satellite imagery showed a thermal anomaly on the lava dome during 14-15 and 18-19 July. Ash plumes drifted 13 km SW on 15 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 July-19 July 2011 Cite this Report

KVERT reported that seismic activity at Shiveluch was moderate during 8-15 July and indicated that possible ash plumes rose to an altitude of 5 km (16,400 ft) a.s.l. Satellite imagery showed a thermal anomaly on the lava dome during 10-11 and 14 July and a gas-and-steam plume that drifted 38 km SE on 10 July. Ground-based observers noted that ash plumes from explosions rose to an altitude of 6 km (19,700 ft) a.s.l. on 11 and 14 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 July-12 July 2011 Cite this Report

KVERT reported moderate seismic activity at Shiveluch during 1-8 July. Seismic data indicated that possible ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. on 4 and 6 July. Satellite imagery showed a thermal anomaly on the lava dome during 2-5 July and gas-and-ash plumes that drifted 78 km NE during 4-5 July. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 June-5 July 2011 Cite this Report

KVERT reported moderate seismic activity at Shiveluch during 24 June-1 July. Ground-based observers noted that ash plumes rose to an altitude of 7.5 km (24,600 ft) a.s.l. Satellite imagery showed a thermal anomaly on the lava dome on 23 and 24 June and ash plumes that drifted 107 km NW on 24 June. The Aviation Color Code remained at Orange.

Based on analysis of satellite imagery, the Tokyo VAAC reported that on 5 July a possible eruption produced a plume that rose to an altitude of 3.4 km (11,000 ft) a.s.l. and drifted E. A subsequent notice that day stated that ash had dissipated.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

22 June-28 June 2011 Cite this Report

KVERT reported moderate seismic activity at Shiveluch during 17-24 June. Seismic data indicated that possible ash plumes rose to an altitude of 10 km (32,800 ft) a.s.l. on 19 June and to an altitude of 6 km (19,700 ft) a.s.l. on 18 and 21 June. Satellite imagery showed a thermal anomaly on the lava dome on 18 and 20 June and ash plumes drifting 176 km in multiple directions during 20-21 June. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 June-21 June 2011 Cite this Report

KVERT reported moderate seismic activity at Shiveluch during 10-16 June and that possible ash plumes rose to an altitude of 10 km (32,800 ft) a.s.l. on 15 June. Satellite imagery showed a gas-and-steam plume drifting 26 km NW on 10 June and a thermal anomaly on the lava dome during 10 and 12-13 June. Meteorological clouds prevented observations on the other days. The Aviation Color Code remained at Orange.

Based on information from KVERT and analyses of satellite imagery, the Tokyo VAAC reported that eruptions on 20 June produced plumes that rose to altitudes of 6.7-10.1 km (22,000-33,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

8 June-14 June 2011 Cite this Report

KVERT reported that during 3-10 June seismic activity at Shiveluch indicated that possible ash plumes rose to an altitude of 9 km (29,500 ft) a.s.l. on 5 June and to altitudes of 5-7 km (16,400-22,960 ft) a.s.l. during 4-6 and 8 June. Satellite imagery showed a thermal anomaly on the lava dome during 3-4 June, and ash plumes that drifted 734 km SE on 4 June and 377 km NE during 5-6 June. Based on information from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 10 June an ash plume rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted W. The Aviation Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

1 June-7 June 2011 Cite this Report

KVERT reported that during 27 May-3 June seismic activity at Shiveluch indicated that possible ash plumes rose to altitudes of 4.7-9 km (15,400-29,500 ft) a.s.l. During 29-30 May satellite imagery showed a thermal anomaly over the lava dome. Those same two days, ground-based observers noted that ash plumes rose to an altitude of 10 km (32,800 ft) a.s.l. and drifted S. Clouds prevented observations on the other days. During 30-31 May long ash clouds drifted 1,000 km SW and approached Petropavlovsk-Kamchatsky. The Aviation Color Code remained at Orange.

Based on information from KVERT and analyses of satellite imagery, the Tokyo VAAC reported that on 4 June an eruption produced a plume that rose to an altitude of 5.2 km (17,000 ft) a.s.l. According to KEMSD, eruptions during 5-6 June produced plumes that rose to altitudes of 6.1-9.1 km (20,000-30,000 ft) a.s.l. Plumes drifted E on 5 June.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

25 May-31 May 2011 Cite this Report

KVERT reported that during 20-27 May seismic activity at Shiveluch did not exceed background levels. Strong gas-and-steam activity was observed on 21 May; cloud cover prevented ground-based observations on the other days. Satellite imagery showed ash plumes drifting 58 km SW on 20 May and a thermal anomaly over the lava dome during 19-21 and 24 May. The Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that during 30-31 May eruptions produced plumes that rose to altitudes of 7.6-8.2 km (25,000-27,000 ft) a.s.l. and drifted S. According to news articles, ash plumes caused authorities to reroute a number of international flights in the region.

Sources: BNO News; Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

18 May-24 May 2011 Cite this Report

KVERT reported that during 15-16 May seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 3.4 km (11,200 ft) a.s.l. According to ground-based observations ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. on 15 May and to 4 km (13,100 ft) a.s.l. on 16 May. Satellite imagery showed ash plumes drifting 58 km SE on 15 May and a thermal anomaly over the lava dome during 15-16 and 19 May. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 May-17 May 2011 Cite this Report

KVERT reported that during 5-7 May seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 3.9 km (12,800 ft) a.s.l. According to ground-based observations ash plumes rose to an altitude of 7.5 km (24,600 ft) a.s.l. on 7 May and to altitudes of 3-4 km (9,800-13,100 ft) a.s.l. during 5-6 and 8 May. Satellite imagery showed ash plumes drifting 196 km N during 5-6 May. On 7 May small ash clouds drifted S and SE, and gas-and-steam plumes drifted 230 km E. A thermal anomaly was detected during 7-8 May. KVERT noted that the Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that on 15 May an eruption produced a plume that rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted E.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

4 May-10 May 2011 Cite this Report

KVERT reported that during 29 April-6 May a thermal anomaly on Shiveluch was detected in satellite imagery. According to ground-based observations during 28-29 April ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. On 1 May ash plumes observed in satellite imagery drifted 124 km NE. Seismic data indicated that possible ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. on 29 April and 2 May. KVERT noted that the Aviation Color Code remained at Orange. Based on analyses of satellite imagery, the Tokyo VAAC reported that on 7 May a possible eruption produced a plume that rose to an altitude of 5.2 km (17,000 ft) a.s.l. and drifted E. Subsequent notices that day stated that ash had dissipated.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

27 April-3 May 2011 Cite this Report

KVERT reported that during 22-29 April seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 6.7 km (22,000 ft) a.s.l. Satellite imagery showed a thermal anomaly daily on the lava dome. According to ground-based observations during 22 and 25-27 April ash plumes rose to an altitude of 7.5 km (24,600 ft) a.s.l. and drifted N and SE. Satellite imagery showed ash plumes drifting 153 km N on 22 April and as far as 400 km SE during 23-24 and 27 April. KVERT noted that the Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that on 1 May an eruption produced a plume that rose to an altitude of 6.1 km (20,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

20 April-26 April 2011 Cite this Report

KVERT reported that during 15-22 April seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 3.2 km (10,500 ft) a.s.l. Satellite imagery showed a thermal anomaly on the lava dome during 15-18 and 20 April, and ash plumes that drifted 55 km NE on 17 April. Based on information from KEMSD and information from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 22 April an eruption produced plumes that rose to altitudes of 4.3-7.3 km (14,000-24,000 ft) a.s.l. and drifted W and NW. The Aviation Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

13 April-19 April 2011 Cite this Report

KVERT reported that during 1-7 April seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 4.6 km (15,100 ft) a.s.l. On 8 April gas-and-steam plumes were observed from the ground and a thermal anomaly over the lava dome was observed in satellite imagery. Ash plumes drifted 33 km NW on 11 April. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 April-12 April 2011 Cite this Report

KVERT reported that during 1-7 April seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 7.5 km (24,600 ft) a.s.l. Ground-based observations during 1-2 April indicated that gas-and-steam plumes containing ash rose to an altitude of 2.7 km (8,800 ft) a.s.l. A thermal anomaly on the lava dome was observed in satellite imagery those same two days. Ash plumes drifted in different directions as far as 187 km during 1-3 and 5 April. The Tokyo VAAC reported that on 7 April a possible eruption detected in satellite imagery produced a plume that rose to an altitude of 3.7 km (12,000 ft) a.s.l. Subsequent notices that day stated that ash continued to be detected, and then dissipated. The Aviation Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

30 March-5 April 2011 Cite this Report

KVERT reported that during 25 March-1 April seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 3.7 km (12,100 ft) a.s.l. A thermal anomaly on the lava dome was observed in satellite imagery during 25-29 March, and ash plumes drifted 57 km SE on 26 March. Ground-based observers noted that ash-and-gas plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. during 25-30 March.

Based on information from KEMSD and analyses of satellite imagery, the Tokyo VAAC reported that on 5 April an eruption produced a plume that rose to an altitude of 7.6 km (23,000 ft) a.s.l. and drifted N. A possible eruption detected in satellite imagery the next day produced a plume that rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted NE.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

23 March-29 March 2011 Cite this Report

KVERT reported that during 18-25 March seismic data at Shiveluch indicated that possible ash plumes rose to an altitude of 5.8 km (19,000 ft) a.s.l. A thermal anomaly on the lava dome was observed daily in satellite imagery, and ash plumes drifted 373 km SE and N during 18-20 March. Ground-based observers noted that ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. on 22 March. The Tokyo VAAC reported that on 23 March an eruption detected in satellite imagery and reported by KEMSD produced a plume that rose to an altitude of 6.7 km (22,000 ft) a.s.l. Subsequent notices that day stated that ash then dissipated. The Aviation Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

16 March-22 March 2011 Cite this Report

KVERT reported that during 11-18 March seismic data at Shiveluch indicated that possible ash plumes rose to altitudes of 3.8-8 km (12,500-26,200 ft) a.s.l. Satellite imagery showed ash plumes drifting 312 km W and NW on 10 and 16 March, and thermal anomalies on the lava dome during 12-13 and 15-16 March. According to ground-based observations, an ash plume rose to an altitude of 6.5 km (21,300 ft) a.s.l. on 16 March. The Aviation Color Code remained at Orange. The Tokyo VAAC reported that on 19 March a possible eruption detected in satellite imagery produced a plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l. Subsequent notices that day stated that ash continued to be detected, and then dissipated.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

9 March-15 March 2011 Cite this Report

KVERT reported that during 4-11 March seismic data at Shiveluch indicated that possible ash plumes rose to altitudes of 4-7.5 km (13,100-24,600 ft) a.s.l. A thermal anomaly over the lava dome was observed in satellite imagery during 5-7 March.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 March-8 March 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 25 February-4 March. Gas-and-steam activity was observed during 24-25 February; cloud cover prevented observations on the other days. A thermal anomaly over the lava dome was observed in satellite imagery during 25-26 February, and 2 March. Ash plumes drifted over 140 km N during 26-27 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 February-1 March 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 18-25 February. A thermal anomaly over the lava dome was observed daily in satellite imagery. Gas and steam activity was observed during 21-24 February and ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. during 22-23 February. Ash plumes observed in satellite imagery drifted more than 220 km SE at altitudes below 6 km (19,700 ft) a.s.l. during 23-24 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 February-22 February 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 11-18 February. A thermal anomaly over the lava dome was observed daily in satellite imagery. Gas and steam activity was observed on 13 and 16 February. The Aviation Color Code remained at Orange. The Tokyo VAAC reported that on 22 February a possible eruption detected in satellite imagery produced a plume that rose to an altitude of 3.4 km (11,000 ft) a.s.l. and drifted NE. Subsequent notices that day stated that ash had dissipated.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

9 February-15 February 2011 Cite this Report

KVERT reported that moderate seismic activity was recorded at Shiveluch during 4-11 February and many volcanic earthquakes were detected. A thermal anomaly over the lava dome was observed in satellite imagery. Ash plumes observed from the ground rose to an altitude of 7.5 km (24,600 ft) a.s.l. on 4 February. That same day ash plumes detected in satellite imagery drifted 120 km E. Gas-and-steam activity was observed during 4 and 6-7 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 February-8 February 2011 Cite this Report

KVERT reported that moderate seismic activity was detected at Shiveluch during 28 January-4 February and many volcanic earthquakes were detected. A thermal anomaly over the lava dome was observed in satellite imagery. Gas and steam activity was occasionally observed. Ash plumes were seen rising to an altitude of 6 km (19,700 ft) a.s.l. on 30 January and 3 February. Ash plumes observed in satellite imagery drifted 120 km NE during 31 Janaury-1 February, and rose to altitudes of 6-8 km (19,700-26,200 ft) a.s.l. on 1 February. The Aviation Color Code remained at Orange.

The Tokyo VAAC reported that on 8 February a possible eruption detected in satellite imagery produced a plume that rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted E. Subsequent notices that day stated that ash had dissipated.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

26 January-1 February 2011 Cite this Report

KVERT reported that during 21-28 January moderate seismic activity from Shiveluch was recorded, and an intense thermal anomaly over the volcano was detected in satellite imagery. Gas-and-steam emissions were visually observed during 23-26 January and an ash plume was observed rising to an altitude of 4 km (13,100 ft) a.s.l. on 26 January. Satellite imagery showed an ash plume drifting 54 km S on 26 January. The Aviation Color Code remained at Orange.

The Tokyo VAAC reported that on 31 January and 1 February possible eruptions detected in satellite imagery produced plumes that rose to altitudes of 3.4-3.7 km (11,000-12,000 ft) a.s.l. and drifted NE. Subsequent notices on both days stated that ash had dissipated.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

19 January-25 January 2011 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was recorded during 14-21 January. Moderate gas-and-steam activity was visually observed during 17-20 January, and on 18 January an ash plume was observed rising to an altitude of 6.5 km (21,300 ft) a.s.l. A bright thermal anomaly over the volcano was detected in satellite imagery during 13-15 and 18-20 January. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 January-18 January 2011 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 7-13 January. A bright thermal anomaly over the lava dome was observed in satellite imagery during 7-11 January. Visual observations during 7-9 and 13 January, when the weather did not obscure the volcano, showed steam-and-gas activity. The Aviation Color Code level remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 18 January an eruption produced a plume that rose to an altitude of 7 km (23,000 ft) a.s.l. and drifted W.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

5 January-11 January 2011 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 31 December-7 January. A bright thermal anomaly over the volcano was observed daily in satellite imagery. Seismic data showed that possible ash plumes rose to an altitude of 5 km (16,400 ft) a.s.l. on 2 January. That same day an explosion generated ash plumes that rose to an altitude of 8 km (26,000 ft) a.s.l. and were observed in satellite imagery drifting 92 km S. Moderate gas-and-steam activity was visually observed during 2 and 5-6 January. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 December-4 January 2011 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 24-30 December. Ash explosions on 24 December produced ash plumes that rose to altitudes as high as 4.5 km (14,800 ft) a.s.l. A bright thermal anomaly over the volcano was observed in satellite imagery during 24 and 27-28 December. Moderate gas-and-steam activity was visually observed on 24 and 28 December. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

22 December-28 December 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 17-24 December. A bright thermal anomaly over the volcano was observed in satellite imagery. Moderate gas-and-steam activity was visually observed during 19-20 and 23 December. Ash explosions on 23 December produced ash plumes that rose to altitudes as high as 4.5 km (14,800 ft) a.s.l. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 December-21 December 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 10-17 December and a bright thermal anomaly was observed in satellite imagery. Seismic data analysis suggested that ash plumes rose to an altitude of 5.2 km (17,100 ft) a.s.l. Strong gas-and-steam activity was observed during 9 and 11-14 December. On 14 December, an ash explosion produced an ash plume that rose to an altitude of 4.5 km (14,800 ft) a.s.l. and a 2-km-long pyroclastic flow. Satellite imagery showed an ash plume that drifted 230 km NE. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 December-14 December 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 3-10 December. A bright thermal anomaly over the volcano was observed in satellite imagery. Plumes composed of either gas and steam or ash were seen in satellite imagery drifting 322 km SE on 3 December. Seismic data analyses on 6 December suggested that ash plumes rose to an altitude of 5 km (16,400 ft) a.s.l. Gas-and-steam activity was observed visually during 3, 6, and 8-9 December. The Aviation Color Code level remained at Orange.

Based on analyses of satellite imagery and information from KVERT, the Tokyo VAAC reported that on 14 December an eruption produced a plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

1 December-7 December 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 26 November-3 December. A bright thermal anomaly over the volcano was observed in satellite imagery. Strong gas-and-steam activity was observed on 26 and 29 November. Satellite images showed ash plumes drifting 153 km N and NE during 29-30 November, as well as several ash clouds (as large as 81 by 16 km) at distances as far as 351 km N and NE. Seismic data analysis suggested that ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. on 1 December. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 November-30 November 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 19-26 November, suggesting that possible ash plumes rose to an altitude of 3.8 km (12,500 ft) a.s.l. A bright thermal anomaly over the volcano was observed in satellite imagery. Ash plumes that rose to an altitude of 5.8 km (19,000 ft) a.s.l. and strong gas-and-steam activity were observed on 19, 20, 22, and 24 November. Ash plumes observed in satellite imagery drifted 408 km E and S during 19-20 and 23-24 November. The Aviation Color Code level remained at Orange.

Based on analyses of satellite imagery, the Tokyo VAAC reported that on 30 November an eruption produced an ash plume that rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted NE.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

17 November-23 November 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 12-19 November, suggesting that possible ash plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. Two distinct thermal anomalies over the volcano observed in satellite imagery showed the hot lava dome and recent pyroclastic flow deposits from an eruption on 27 October. During 11-14 November, satellite imagery showed ash plumes drifting 100 km N and E, and ash clouds with dimensions as large as 60 by 32 km. Gas-and-steam activity was observed during 16-18 November; cloud cover prevented visual observations the other days. The Aviation Color Code level remained at Orange.

Based on analyses of satellite imagery and information from KVERT, the Tokyo VAAC reported that during 19-21 and 23 November eruptions produced plumes that rose to altitudes of 4.6-5.2 km (15,000-17,000 ft) a.s.l. and drifted NE, E, and SE

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

10 November-16 November 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 5-12 November and a large thermal anomaly over the volcano was observed in satellite imagery. Seismic data suggested that possible ash plumes rose to altitudes of 6.5 and 7 km (21,300 and 23,000 ft) a.s.l. on 6 and 8 November, respectively. Ash plumes were detected in satellite imagery during 7-9 November drifting 150 km SE. An ash plume observed on 10 November rose to an altitude of 5 km (16,400 ft) a.s.l. KVERT noted that growth of the lava dome continued. The Aviation Color Code level remained at Orange.

During 13-14 November, the Tokyo VAAC reported that ash plumes from eruptions were observed in satellite imagery drifting E at altitudes of 4.6-5.2 km (15,000-17,000 ft) a.s.l. A possible eruption on 16 November produced a plume that rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted NE.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

3 November-9 November 2010 Cite this Report

KVERT reported that moderate seismic activity from Shiveluch was detected during 29 October-5 November and a thermal anomaly over the volcano was observed in satellite imagery. Seismic data on 31 October, and 1 and 4 November suggested that ash plumes rose to an altitude of 5.8 km (19,000 ft) a.s.l. Satellite imagery showed ash plumes drifting 400 km SE on 31 October and 1 November. Fumarolic activity was seen during 1-2 November. Cloud cover prevented observations the other days.

On 1 November, pyroclastic flow deposits from the large explosive eruption on 27 October were detected in satellite imagery on the ESE flank, and had traveled 15 km. Volcanologists inspected the deposits the next day and found that the pyroclastic flow had annihilated a forest in the Bekesh River valley. More than half of the lava dome edifice was destroyed during the eruption. The Aviation Color Code level remained at Orange.

During 4-9 November, the Tokyo VAAC reported that ash plumes from possible eruptions were observed in satellite imagery drifting N, SE, and S at altitudes of km (15,000-25,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

27 October-2 November 2010 Cite this Report

KVERT reported that seismic activity from Shiveluch began to increase on 27 October. The magnitude of volcanic tremor then sharply increased on 28 October, indicating a strong explosive eruption. Cloud cover prevented observations of the volcano, but ash plumes possibly rose to an altitude of 10 km (32,800 ft) a.s.l. Ash fell in Ust-Kamchatsk, 85 km SE, a few hours later. The road from Ust-Kamchatsk to Kliuchi, 50 km SW, closed due to poor visibility and darkness. Satellite images indicated that the ash plume rose to an altitude of 12 km (39,400 ft) a.s.l. and drifted E. The Aviation Color Code level was raised to Red. According to news articles, ash from Shiveluch and Kliuchevskoi caused area flight diversions.

On 29 October satellite imagery showed the ash plume drifting 2,500 km E; ash continued to fall in Ust-Kamchatsk. Ash explosions continued on 30 October. Seismic data suggested that ash plumes rose to an altitude of 10 km (32,800 ft) a.s.l. and drifted NE. The Aviation Color Code level was lowered to Orange. Based on analyses of satellite imagery and information from KVERT, the Tokyo VAAC reported that possible eruptions on 31 October and during 1-2 November produced ash plumes that rose to altitudes of 3.7-6.7 km (12,000-22,000 ft) a.s.l. and drifted SE and E. Subsequent notices on 31 October and 1 November stated that ash had dissipated.

Sources: Associated Press; Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

20 October-26 October 2010 Cite this Report

KVERT reported that seismic activity from Shiveluch was above background levels during 14-16 October and at background levels during 17-22 October. Seismic data on 14 October suggested that ash plumes rose to an altitude of 3.8 km (12,500 ft) a.s.l. Satellite imagery analyses showed a daily thermal anomaly on the volcano and ash plumes that drifted 72 km SE on 15 and 16 October. Gas-and-steam plumes sometimes containing ash were observed during 15-18 October. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 October-19 October 2010 Cite this Report

KVERT reported that during 8-15 October seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to altitudes of 5.2-6 km (17,100-19,700 ft) a.s.l. Gas-and-steam plumes sometimes containing ash were periodically observed. Satellite imagery analyses showed a daily thermal anomaly on the volcano and ash plumes that drifted 130 km SE during 9-10 October. Based on analyses of satellite imagery, the Tokyo VAAC reported a possible eruption on 16 October. Subsequent notices stated that ash was present, but had dissipated. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 October-12 October 2010 Cite this Report

KVERT reported that during 1-8 October seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. during 5-7 October. Satellite imagery analysis showed a thermal anomaly on the volcano and gas-and-steam plumes that drifted 190 km SE on 2 and 3 October. Gas-and-steam plumes sometimes containing ash were visually observed during 3-7 October. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 September-5 October 2010 Cite this Report

KVERT reported that during 24 September-1 October seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose from the volcano. Gas-and-steam plumes were observed during 23, 25, and 28-29 September. Satellite imagery analyses showed a daily thermal anomaly on the volcano and gas-and-steam plumes that drifted 70 km SE on 29 September. Based on analyses of satellite imagery, the Tokyo VAAC reported a possible eruption on 3 October; a subsequent notice stated that ash had dissipated. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

22 September-28 September 2010 Cite this Report

KVERT reported that during 17-24 September seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. Satellite imagery analysis showed a thermal anomaly on the volcano. Gas-and-ash plumes were observed on 21 September, and satellite imagery showed ash plumes drifting 16 km SE the same day. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 September-21 September 2010 Cite this Report

KVERT reported that during 10-17 September seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Satellite imagery analysis showed a thermal anomaly on the volcano. Gas-and-ash plumes were observed during 12-15 September; clouds prevented observations on the other days. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

8 September-14 September 2010 Cite this Report

KVERT reported that during 3-10 September seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. during 3-4 September. Gas-and-ash plumes were observed on 6 and 7 September; clouds prevented observations on the other days. Satellite imagery analysis showed a thermal anomaly on the volcano during the week. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 September-7 September 2010 Cite this Report

KVERT reported that during 27 August-3 September seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. Satellite imagery analysis showed a thermal anomaly on the volcano. Gas-and-ash plumes were observed during 27-30 August. Based on information from KEMSD and satellite imagery analyses, the Tokyo VAAC reported that during 2-3 September eruptions produced plumes that rose to an altitude of 6.7 km (22,000 ft) a.s.l. The Aviation Color Code level remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

25 August-31 August 2010 Cite this Report

KVERT reported that during 20-27 August seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to an altitude of 8.5 km (27,900 ft) a.s.l. during 20-24 August. Gas-and-ash plumes were observed on 20 and 21 August. Satellite imagery analysis showed a thermal anomaly on the volcano during 20-22 and 24 August. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 August-24 August 2010 Cite this Report

KVERT reported that during 13-20 August seismic activity from Shiveluch was above background levels and gas-and-steam plumes were seen during 14-16 August. A daily thermal anomaly was seen in satellite imagery. Based on information from KEMSD, the Tokyo VAAC reported that during 22-23 August eruptions produced plumes that rose to altitudes of 6.4-8.5 km (21,000-28,000 ft) a.s.l. The Aviation Color Code level remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

11 August-17 August 2010 Cite this Report

KVERT reported that during 6-13 August seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. on 9 August and to an altitude of 4 km (13,100 ft) a.s.l. the other days. Cloud cover prevented visual observations. Satellite imagery analysis showed a daily thermal anomaly on the volcano and an ash plume that drifted 55 km NW on 10 August. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 August-10 August 2010 Cite this Report

KVERT reported that during 30 July-6 August seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Gas-and-steam plumes were seen rising to an altitude of 4 km (13,100 ft) a.s.l. during 29-31 July. Cloud cover prevented observations the other days. Satellite imagery analysis showed a large daily thermal anomaly on the volcano. Based on analysis of satellite imagery, the Tokyo VAAC reported that an eruption on 9 August produced a plume that rose to an altitude of 6.7 km (22,000 ft) a.s.l. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

28 July-3 August 2010 Cite this Report

KVERT reported that during 23-30 July seismic activity from Shiveluch was above background levels and a daily thermal anomaly was detected in satellite imagery. Possible ash plumes from hot avalanches and explosions on 28 and 29 July rose to altitudes of 4-6.5 km (13,100-21,300 ft) a.s.l. Gas-and-steam plumes were seen rising to an altitude of 4 km (13,100 ft) a.s.l. on 23 and 24 July. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 July-27 July 2010 Cite this Report

KVERT reported that during 16-23 July seismic activity from Shiveluch was above background levels, possibly indicating weak ash explosions from the lava dome. According to visual observations, gas-and-steam plumes rose daily to an altitude of 3.7 km (12,100 ft) a.s.l. and ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. on 20 and 21 July. Satellite imagery showed a large daily thermal anomaly over the lava dome and ash plumes that drifted 50 km NE on 21 July. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 July-20 July 2010 Cite this Report

KVERT reported that during 9-16 July seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 4.3 km (12,100 ft) a.s.l. Satellite imagery showed a large daily thermal anomaly over the lava dome. Gas-and-steam plumes were seen rising to an altitude of 3.7 km (12,100 ft) a.s.l. during 9 and 11-14 July. Based on analysis of satellite imagery, the Tokyo VAAC reported a possible eruption on 19 July. Ash was seen in subsequent satellite images and then later dissipated. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

7 July-13 July 2010 Cite this Report

KVERT reported that during 2-9 July seismic activity from Shiveluch was above background levels and suggested that on most days possible ash plumes rose to an altitude of 7 km (22,900 ft) a.s.l. On 5 July ash plumes from hot avalanches rose to an altitude of 4 km (13,100 ft) a.s.l. and strong fumarolic activity was noted. Ashfall was observed around the volcano. Satellite imagery showed a large daily thermal anomaly over the lava dome and an ash plume that drifted 20 km S on 7 July. Tokyo VAAC reported that satellite imagery analyses indicated a possible eruption on 10 July. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

30 June-6 July 2010 Cite this Report

KVERT reported that during 24 June-2 July seismic activity from Shiveluch was above background levels and suggested that possible ash plumes occasionally rose to an altitude of 6.6 km (21,600 ft) a.s.l. On 24 and 29 June ash plumes from hot avalanches rose to an altitude of 4.5 km (14,800 ft) a.s.l. Strong fumarolic activity was also noted on these days. On 1 July, seismicity increased and may have indicated ash plumes rose to an altitude of 8 km (26,200 ft) a.s.l. Ashfall was reported in Klyuchi village, 50 km SW. Satellite imagery showed a large daily thermal anomaly over the lava dome. Based on analysis of satellite imagery and information from Yelizovo Airport (UHPP), the Tokyo VAAC reported that on 3 July an ash plume rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted N. Satellite imagery showed a possible eruption the next day. The Aviation Color Code level remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

23 June-29 June 2010 Cite this Report

KVERT reported that during 18-25 June seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 5.1 km (16,700 ft) a.s.l. Strong fumarolic activity and hot avalanches were observed during 21-23 June. An ash plume was seen rising to an altitude of 6.5 km (21,300 ft) a.s.l. on 23 June. Satellite imagery showed a large daily thermal anomaly over the lava dome and an ash cloud 5 x 5 km in dimension 30 km SE on 23 June. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 June-22 June 2010 Cite this Report

KVERT reported that during 11-18 June seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 4.9 km (16,100 ft) a.s.l. Strong fumarolic activity and hot avalanches were seen on most days. Satellite imagery showed a large daily thermal anomaly over the lava dome, and a small anomaly near the lava dome on 15 June. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 June-15 June 2010 Cite this Report

KVERT reported that during 4-11 June seismic activity from Shiveluch was above background levels and hot avalanches were seen at night. The seismic data suggested that possible ash plumes rose to an altitude of 4.1 km (13,400 ft) a.s.l. during 3-4 and 6 June. Ash plumes were seen during 4-6 and 9 June rising to an altitude of 4.5 km (14,800 ft) a.s.l. Satellite imagery showed a large daily thermal anomaly over the lava dome, and ash plumes that drifted 100 km SE on 4 June. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 June-8 June 2010 Cite this Report

KVERT reported that during 28 May-4 June seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to an altitude of 6.1 km (20,000 ft) a.s.l. Strong fumarolic activity was also noted and, at night, hot avalanches were seen. Ash plumes observed throughout the reporting period rose to an altitude of 4.5 km (14,800 ft) a.s.l. Satellite imagery showed a large daily thermal anomaly. Gas-and-steam plumes seen in imagery drifted 30 km W on 29 May, and an ash cloud 20 by 6 km in dimension was detected about 15 km N on 31 May. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 May-1 June 2010 Cite this Report

KVERT reported that during 21-28 May seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to an altitude of 4.7 km (15,400 ft) a.s.l. Satellite imagery showed a large daily thermal anomaly, and an ash plume that drifted 10 km NE on 23 May. Observations revealed fumarolic activity, and ash plumes that rose to an altitude of 4.5 km (14,800 ft) a.s.l. on 24 and 25 May. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 May-25 May 2010 Cite this Report

KVERT reported that during 14-21 May seismic activity from Shiveluch was above background levels, suggesting that possible ash plumes rose to an altitude of 5.1 km (16,700 ft) a.s.l. Satellite imagery revealed a large daily thermal anomaly from the lava dome. An ash plume drifted about 40 km SE on 15 May and gas-and-steam plumes drifted the same distance NE on 18 May. Based on information from KVERT, the Tokyo VAAC reported that on 24 May an ash plume rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted NE. Ash was not identified on satellite imagery. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

12 May-18 May 2010 Cite this Report

KVERT reported that during 7-14 May seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 8.3 km (27,200 ft) a.s.l. on most days. Gas-and-steam plumes were sometimes seen rising to an altitude of 3.2 km (10,500 ft) a.s.l. Satellite imagery revealed a large daily thermal anomaly from the lava dome. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 May-11 May 2010 Cite this Report

KVERT reported that during 30 April-7 May seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted about 18 km W on 3 May. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 April-4 May 2010 Cite this Report

KVERT reported that during 23-30 April seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 5.7 km (18,700 ft) a.s.l. During 22-25 April ash plumes from hot avalanches rose to an altitude of 3 km (10,000 ft) a.s.l. and fumarolic activity from the lava dome was noted. Satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted about 60 km SE on 28 April. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 April-27 April 2010 Cite this Report

KVERT reported that during 16-23 April seismic activity from Shiveluch was above background levels and ash plumes from hot avalanches rose to an altitude of 4 km (13,100 ft) a.s.l. Seismic data suggested that ash plumes rose 4-6.9 km (13,100-22,600 ft) a.s.l. during 15-17 and 20-21 April. An ash explosion on 18 April generated an ash plume that rose to an altitude of 7 km (23,000 ft) a.s.l. Satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted about 50-220 km SE on 18, 20, and 21 April. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 April-20 April 2010 Cite this Report

KVERT reported that during 9-15 April seismic activity from Shiveluch was above background levels. Seismic data suggested that ash plumes rose to about 7.5 km (24,600 ft) a.s.l. on 8 April and up to 5.6 km (18,400 ft) a.s.l. the other days of the week. Ash plumes from hot avalanches were seen rising to an altitude of 3.7 km (12,100 ft) a.s.l. during 9-13 April. Satellite imagery revealed a large daily thermal anomaly from the lava dome and a gas-and-steam plume that drifted about 75 km E on 13 April. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 April-13 April 2010 Cite this Report

KVERT reported that during 2-9 April seismic activity from Shiveluch was above background levels. Ash plumes from hot avalanches rose to an altitude of 6.1 km (20,000 ft) a.s.l. on 5 and 8 April. Satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted about 100 km SE on 5 April. The Tokyo VAAC reported that on 10 April ash plumes were seen in satellite imagery. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

31 March-6 April 2010 Cite this Report

KVERT reported that during 26 March-2 April seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 4.7 km (15,400 ft) a.s.l. Hot avalanches from the lava dome were seen at night. Satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted about 40 km SE on 29 March. Based on information from KVERT, the Tokyo VAAC reported that on 5 April an ash plume rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted SE. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

24 March-30 March 2010 Cite this Report

KVERT reported that during 19-29 March seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 4.2 km (13,800 ft) a.s.l. Hot avalanches from the lava dome were seen at night. On 22 March, seismic signals detected an explosion that may have produced an ash plume rising to an altitude of 7 km (23,000 ft) a.s.l. Satellite imagery revealed a large daily thermal anomaly from the volcano, and ash plumes that drifted over 40 km NE on 21 March. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

17 March-23 March 2010 Cite this Report

KVERT reported that during 12-19 March seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 5.5 km (18,000 ft) a.s.l. Hot avalanches were seen at night. Gas-and-steam plumes sometimes containing ash were seen on 12, 13, 15, and 16 March; plumes seen in satellite imagery on 13 and 16 March drifted 90 km E and SE. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. Based on information from KVERT, the Tokyo VAAC reported that on 21 March an ash plume rose to an altitude of 2.7 km (9,000 ft) a.s.l. and drifted NE. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

10 March-16 March 2010 Cite this Report

KVERT reported that during 5-12 March seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 6.4 km (21,000 ft) a.s.l. Gas-and-steam plumes sometimes containing ash were seen daily, rising to altitudes of 2.5-3.5 km (8,200-11,500 ft) a.s.l. and drifting 130 km ESE; an ash plume rose to an altitude of 5.5 km (18,000 ft) a.s.l. on 10 March. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 March-9 March 2010 Cite this Report

KVERT reported that during 26 February-5 March seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 6 km (19,700 ft) a.s.l. Fumarolic activity was occasionally observed. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted 30 km NE on 26 February and 130 km SE on 28 February. Ash fell in Klyuchi, 50 km SW, on 26 February. On 3 March, a second thermal anomaly on the S flank was noted. Based on information from KVERT and analyses of satellite imagery, the Tokyo VAAC reported that during 5 and 8-9 March ash plumes rose to an altitude of 2.7 km (9,000 ft) a.s.l. and drifted E and SE. The Aviation Color Code level remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

24 February-2 March 2010 Cite this Report

KVERT reported that during 19-26 February seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 5 km (16,400 ft) a.s.l. Fumarolic activity was occasionally observed. Ash and snow fell simultaneously in Klyuchi, 50 km SW, on 21 February. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted 30 km to the N and E on 23 and 25 February, respectively. Gas-and-steam plumes drifted 60 km N during 18 and 22-25 February. The Aviation Color Code level remained at Orange. Based on information from KVERT, the Tokyo VAAC reported that on 26 February an ash plume rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted NE.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

17 February-23 February 2010 Cite this Report

KVERT reported that during 12-19 February seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 5.1 km (16,700 ft) a.s.l. Fumarolic activity was occasionally observed. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome and ash plumes that drifted over 70 km in northern directions on 11, 13, and 17 February. The Aviation Color Code level remained at Orange. Based on information from KVERT, the Tokyo VAAC reported that on 23 February an eruption produced a plume that rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted N.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

10 February-16 February 2010 Cite this Report

KVERT reported that during 5-12 February seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 5.2 km (17,100 ft) a.s.l. Fumarolic activity was occasionally observed. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 February-9 February 2010 Cite this Report

KVERT reported that during 29 January-5 February seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 5.7 km (18,700 ft) a.s.l. Fumarolic activity was observed on 1 February; cloud cover prevented observations on other days. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 January-2 February 2010 Cite this Report

KVERT reported that during 22-29 January seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 4.6 km (15,100 ft) a.s.l. Fumarolic activity was occasionally observed. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that during 29-30 January eruptions produced plumes that rose to altitudes of 4.9-5.8 km (16,000-19,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

20 January-26 January 2010 Cite this Report

KVERT reported that during 15-22 January seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 4.7 km (15,400 ft) a.s.l. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that during 23-24 and 26 January eruptions produced plumes that rose to altitudes of 3-4.6 km (10,000-15,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

13 January-19 January 2010 Cite this Report

KVERT reported that during 8-15 January seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 6.2 km (20,300 ft) a.s.l. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome and an ash plume that drifted 8 km SW on 13 January. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that on 18 January an eruption produced a plume that rose to an altitude of 4.9 km (16,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

6 January-12 January 2010 Cite this Report

KVERT reported that during 1-8 January seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 7.5 km (24,600 ft) a.s.l. Fumarolic activity was occasionally seen when the weather was clear. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome and a gas-and-steam plume that drifted 40 km SW on 6 January. Ashfall was reported in Klyuchi (about 45 km SW) on 4 January. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD and analyses of satellite imagery, the Tokyo VAAC reported that during 6-11 January eruptions produced plumes that rose to altitudes of 4.3-6.4 km (14,000-21,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

30 December-5 January 2010 Cite this Report

KVERT reported that during 24-31 December seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 4.9 km (16,000 ft) a.s.l. Fumarolic activity was occasionally seen when the weather was clear. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome and an ash plume that drifted 15 km W on 28 December. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD and KVERT, the Tokyo VAAC reported that during 30 December-3 January eruptions produced plumes that rose to altitudes of 4.3-7.6 km (14,000-25,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

23 December-29 December 2009 Cite this Report

KVERT reported that during 18-25 December seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 4.1 km (13,500 ft) a.s.l. Fumarolic activity was occasionally seen when the weather was clear. A video camera recorded an ash plume on 22 December. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that during 27-29 December eruptions produced plumes that rose to altitudes of 4.9-5.2 km (16,000-17,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

16 December-22 December 2009 Cite this Report

KVERT reported that during 11-21 December seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 5.5 km (18,000 ft) a.s.l. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 December-15 December 2009 Cite this Report

KVERT reported that during 4-11 December seismic activity from Shiveluch was above background levels, possibly indicating ash plumes rising to an altitude of 5.5 km (18,000 ft) a.s.l. Fumarolic activity was seen with a video camera. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome and an ash plume drifting 85 km SE on 6 December. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that on 13 December an eruption produced a plume that rose to an altitude of 5.8 km (19,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

2 December-8 December 2009 Cite this Report

KVERT reported that during 27 November-4 December seismic activity from Shiveluch was above background levels, possibly indicating that ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Fumarolic activity was seen with a video camera. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome and gas-and-steam plumes, possibly with ash, drifting 70 km E on 27, 28, and 30 November. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that on 4 December an eruption produced a plume that rose to an altitude of 5.8 km (19,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

25 November-1 December 2009 Cite this Report

KVERT reported that during 20-27 November seismic activity from Shiveluch was above background levels, possibly indicating that ash plumes rose to an altitude of 4.3 km (14,100 ft) a.s.l. Fumarolic activity was seen using a video camera. Analyses of satellite imagery revealed a large daily thermal anomaly from the lava dome. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 November-24 November 2009 Cite this Report

KVERT reported that during 13-20 November seismic activity from Shiveluch was above background levels, possibly indicating that ash plumes rose to an altitude of 5.3 km (17,400 ft) a.s.l. According to video camera data, fumarolic activity and hot avalanches were noted on 14 and 15 November. Analyses of satellite imagery revealed a large daily thermal anomaly on the lava dome. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that on 18 November an eruption produced a plume that rose to an altitude of 5.5 km (18,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

11 November-17 November 2009 Cite this Report

KVERT reported that during 6-13 November seismic activity from Shiveluch was above background levels, possibly indicating that ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. According to video camera data, ash plumes rose to an altitude of 4.2 km (13,800 ft) a.s.l. on 5 November and hot avalanches were noted during 10-12 November. Analyses of satellite imagery revealed a large daily thermal anomaly on the lava dome and ash plumes that drifted 320 km E on 11 November. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD and analyses of satellite imagery, the Tokyo VAAC reported that on 14 November an eruption produced a plume that rose to an altitude of 4.9 km (16,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

4 November-10 November 2009 Cite this Report

KVERT reported that during 30 October-6 November seismic activity from Shiveluch was above background levels and possibly indicated that ash plumes rose to an altitude of 4.7 km (15,400 ft) a.s.l. Fumarolic activity was noted and analyses of satellite imagery revealed a large thermal anomaly over the lava dome. According to video camera data, ash plumes rose to an altitude of 8 km (26,400 ft) a.s.l. on 30 October. Ash plumes seen on satellite imagery drifted 130-255 km E on 30 October, and 1 and 5 November. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 October-3 November 2009 Cite this Report

KVERT reported that during 23-30 October seismic activity from Shiveluch was above background levels and possibly indicated that ash plumes rose to an altitude of 3.7 km (12,100 ft) a.s.l. and to an altitude of 6.9 km (22,600 ft) a.s.l. on 29 October. Fumarolic activity was occasionally seen. Analyses of satellite imagery revealed a large thermal anomaly over the lava dome during 22-27 October and an ash plume that drifted 24 km NE on 26 October. Based on information from KEMSD and analyses of satellite imagery, the Tokyo VAAC reported that on 30 October an eruption produced a plume that rose to an altitude of 7 km (23,000 ft) a.s.l. A possible eruption plume rose to an altitude of 6.1 km (20,000 ft) a.s.l. later that day. On 1 November, an eruption produced a plume that rose to an altitude of 4.9 km (16,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

21 October-27 October 2009 Cite this Report

KVERT reported that during 16-23 October seismic activity from Shiveluch was above background levels and possibly indicated that ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Analyses of satellite imagery revealed a large thermal anomaly over the lava dome. According to video camera data and visual observations, multiple hot avalanches traveled down the lava dome. Deposits on the SE flank from a small pyroclastic flow were noted. Fumarolic plumes rose to altitudes of 2.8-5 km (9,200-16,400 ft) a.s.l. during 16, 18-20, and 22 October. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 October-20 October 2009 Cite this Report

KVERT reported that during 9-16 October seismic activity from Shiveluch was above background levels and possibly indicated that ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Analyses of satellite imagery revealed a large thermal anomaly over the lava dome during 8-13 and 15 October. Fumarolic plumes containing small amounts of ash rose to an altitude of 3.5 km (11,500 ft) a.s.l. during 11-13 October. According to video camera data and visual observations, multiple hot avalanches traveled down the lava dome on 12, 13, and 14 October, and deposits from a small pyroclastic flow on the SE flank were noted. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 October-13 October 2009 Cite this Report

KVERT reported that during 2-9 October seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. According to video camera data and visual observations, fumarolic plumes containing small amounts of ash rose to an altitude of 4 km (13,100 ft) a.s.l. during 1-3 October. Based on interpretations of seismic data, possible ash plumes rose to an altitude of 6.8 km (22,300 ft) a.s.l. on 6 October and to an altitude of 4.5 km (14,800 ft) a.s.l. on other days. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 September-6 October 2009 Cite this Report

KVERT reported that during 25 September-2 October seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Fumarolic activity was occasionally seen. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 7 km (23,000 ft) a.s.l. on 27 September and to an altitude of 4.5 km (14,800 ft) a.s.l. on other days. According to video camera data and visual observations, ash plumes rose to an altitude of 4 km (13,100 ft) a.s.l. on 28 September. An ash plume was seen on satellite imagery drifting 65 km ESE on 29 September. The Level of Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 September-29 September 2009 Cite this Report

KVERT reported that during 18-25 September seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 5.2 km (17,100 ft) a.s.l. According to video camera data and visual observations, ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. on 18, 19, and 22 September, and hot avalanches from the lava dome were noted during 18 and 22-23 September. Ash plumes were occasionally seen drifting 15-70 km N, NW, and SE. The Level of Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 28 September an eruption produced a plume that rose to an altitude of 7 km (23,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

16 September-22 September 2009 Cite this Report

KVERT reported that during 11-18 September seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 7.1 km (23,300 ft) a.s.l. On 13 September, pyroclastic flow deposits 5 km long were seen on the S part of the lava dome. Fumarolic activity was seen during 13 and 16-17 September, and hot avalanches originated from the lava dome were seen at night on 16 and 17 September. The Level of Aviation Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 19 September eruptions produced plumes that rose to an altitude of 5.2 km (17,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

9 September-15 September 2009 Cite this Report

KVERT reported that during 4-11 September seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 4.2 km (13,800 ft) a.s.l. and hot avalanches occurred at the lava dome. Gas-and-steam plumes rose to an altitude of 4 km (13,100 ft) a.s.l. during 4-9 September. An ash plume was seen in satellite imagery drifting 80 km E on 8 September.

On 11 September, KVERT reported strong explosions. Based on interpretations of seismic data, ash plumes rose to an altitude greater than 15 km (49,200 ft) a.s.l. The seismic network then detected eight minutes of pyroclastic flows from the lava dome; resulting plumes rose to an altitude of approximately 10 km (32,800 ft) a.s.l. The Aviation Color Code level was raised to Red. Ten more events characterized as ash explosions and either pyroclastic flows or avalanches were detected. Cloud cover prevented visual observations. Seismicity decreased during 11-12 September, and indicated that ash plumes rose to altitudes of 4.5-6.5 km (14,800-21,300 ft) a.s.l. The Aviation Color Code level was lowered to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 September-8 September 2009 Cite this Report

KVERT reported that during 28 August-4 September seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 5.2 km (17,100 ft) a.s.l. and hot avalanches occurred at the lava dome. Gas-and-steam plumes rose to an altitude of 3 km (9,800 ft) a.s.l. during 28-29 and 31 August, and1-3 September. The Aviation Color Code level remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 August-1 September 2009 Cite this Report

KVERT reported that during 21-27 August seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 4.8 km (15,700 ft) a.s.l. and hot avalanches occurred on the lava dome. Gas-and-steam plumes rose to an altitude of 3.3 km (10,800 ft) a.s.l. during 20-23 and 26-27 August. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 31 August eruptions produced plumes that rose to altitudes of 4.6-5.5 km (15,000-18,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

19 August-25 August 2009 Cite this Report

KVERT reported that during 14-24 August seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 5.9 km (19,400 ft) a.s.l. and hot avalanches occurred at the lava dome. An ash plume drifted 50 km S on 14 August, and gas-and-steam plumes rose to an altitude of 4 km (13,100 ft) a.s.l. on 16 August. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 August-18 August 2009 Cite this Report

KVERT reported that during 7-17 August seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 5 km (16,400 ft) a.s.l. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 August-11 August 2009 Cite this Report

KVERT reported that during 31 July-7 August seismic activity from Shiveluch was above background levels. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 7.5 km (24,600 ft) a.s.l. Steam-and-gas plumes with some ash content were also noted. According to video camera data, ash plumes rose to an altitude of 4 km (13,100 ft) a.s.l. on 2 August; gas-and-steam plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. on 2 and 4 August. The Level of Concern Color Code remained at Orange.

Based on analyses of satellite imagery and information from KEMSD, the Tokyo VAAC reported that on 6 and 9 August eruptions produced plumes that rose to altitudes of 4.6-5.2 km (15,000-17,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

29 July-4 August 2009 Cite this Report

KVERT reported that during 24-31 July seismic activity from Shiveluch was above background levels. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 6.5 km (21,300 ft) a.s.l. Steam-and-gas plumes with some ash content were also noted. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome. According to video camera data, ash plumes rose to an altitude of 5 km (16,400 ft) a.s.l. on 23 and 27 July; gas-and-steam plumes rose to an altitude of 2.7 km (8,900 ft) a.s.l. on 24 and 27 July. The Level of Concern Color Code remained at Orange.

Based on analyses of satellite imagery and information from KEMSD, the Tokyo VAAC reported that during 1-2 August eruptions produced plumes that rose to altitudes of 3-5.8 km (10,000-19,000 ft) a.s.l. and drifted E and NE.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

22 July-28 July 2009 Cite this Report

KVERT reported that during 17-18 and 20-24 July seismic activity from Shiveluch was above background levels. During 17-20 and 22 July, gas-and-steam plumes seen on a video camera rose to an altitude of 3.7 km (12,100 ft) a.s.l. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 5.2 km (17,000 ft) a.s.l. on 20, 21, and 22 July, and steam-and-gas plumes with some ash content were noted on other days. Analyses of satellite imagery revealed a large daily thermal anomaly over the lava dome, and steam plumes that drifted as far away as 40 km on 18 and 20 July. The Level of Concern Color Code remained at Orange.

Based on analyses of satellite imagery and information from KEMSD, the Tokyo VAAC reported that during 23-24 and 27-28 July eruptions produced plumes that rose to altitudes of 4.6-6.1 km (15,000-20,000 ft) a.s.l. According to news sources, an ash plume rose to an altitude of 7 km (23,000 ft) a.s.l. late on 25 July. Increased seismicity, powerful ash bursts, and avalanches were also reported.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC); RIA Novosti

15 July-21 July 2009 Cite this Report

KVERT reported that during 10-17 July seismic activity from Shiveluch was above background levels. On 14 July, a gas-and-steam plume seen on a video camera rose to an altitude of 4 km (13,100 ft) a.s.l. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 6.5 km (21,300 ft) a.s.l. during 10, 13-14, and 16 July, and steam-and-gas plumes with some ash content were emitted during the reporting period. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome, and a steam plume that drifted 19 km SW on 13 July. The Level of Concern Color Code remained at Orange. Based on analyses of satellite imagery and information from KEMSD, the Tokyo VAAC reported that on 17 July an eruption produced a plume that rose to an altitude of 5.5 km (18,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

8 July-14 July 2009 Cite this Report

KVERT reported that during 3-10 July seismic activity from Shiveluch was above background levels. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 5.3 km (13,400 ft) a.s.l. on 2 and 4 July, and steam-and-gas plumes with some ash content were emitted during the reporting period. On 3 July, a gas-and-steam plume seen on a video camera rose to an altitude of 3.3 km (10,800 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 July-7 July 2009 Cite this Report

KVERT reported that during 25 June-3 July seismic activity from Shiveluch was above background levels. Pyroclastic flows were noted on 25 and 26 June. Based on interpretations of seismic data, ash plumes possibly rose to an altitude of 8.1 km (26,600 ft) a.s.l. during 25-30 June, and steam-and-gas plumes with some ash content were emitted during the reporting period. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome and ash plumes that drifted 97 km NE on 26 June. The Level of Concern Color Code remained at Orange. Based on analysis of satellite imagery and information from KEMSD, the Tokyo VAAC reported that on 3 and 5 July eruptions produced plumes that rose to altitudes of 4.9-5.5 km (16,000-18,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

24 June-30 June 2009 Cite this Report

KVERT reported that during 19-26 June seismic activity from Shiveluch was above background levels. Based on interpretations of seismic data, steam-and-gas plumes with some ash content were emitted during the reporting period; ash plumes possibly rose to an altitude of 6.8 km (20,000 ft) a.s.l. On 20 June, ash plumes seen on a video camera rose to an altitude of 5 km (16,400 ft) a.s.l. Gas-and-steam activity was observed at other times during the reporting period. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome. Ash plumes were also seen on satellite imagery drifting 114 km S during 20 and 22-24 June and more than 100 km SW and NE on 25 June. A pyroclastic flow occurred on 25 June. The Level of Concern Color Code remained at Orange. Based on analysis of satellite imagery and information from KEMSD, the Tokyo VAAC reported that during 27-28 and 30 June eruptions produced plumes that rose to altitudes of 4.9-7 km (16,000-23,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

17 June-23 June 2009 Cite this Report

A new viscous lava flow from the lava dome was reported by KVERT during 11-18 June. Satellite thermal data indicated a large anomaly over the lava dome the entire week. Above-background levels of seismicity persisted throughout that time. Video recordings revealed ash plumes up to an altitude of 6.1 km (20,000 ft) a.s.l on 12-15 and 18 June. Ash plumes extended up to 50 km (31 miles) to the south 11 and 13-14 June. Another ash cloud on 12 June was 40 x 20 km in size at a distance of 140 km (87 miles) SW. Moderate to strong gas-and-steam plumes were observed during other times.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 June-16 June 2009 Cite this Report

KVERT reported that during 5-11 June seismic activity from Shiveluch was above background levels. Based on interpretations of seismic data, diffuse ash plumes were emitted during the reporting period; ash plumes possibly rose to altitudes of 4.8-7.7 km (16,000-25,300 ft) a.s.l. during 6 and 10-11 June. Video camera images showed steam-and-gas emissions. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome, and ash plumes that drifted 90 km S on 6 and 7 June. The Level of Concern Color Code remained at Orange. Based on analysis of satellite imagery and information from KEMSD, the Tokyo VAAC reported that during 11-12 and 14-15 June eruptions produced plumes that rose to altitudes of 6.1-7.9 km (20,000-26,000 ft) a.s.l. A possible eruption was seen on satellite imagery on 13 June.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

3 June-9 June 2009 Cite this Report

KVERT reported that during 29 May-5 June seismic activity from Shiveluch was above background levels. Based on interpretations of seismic data, diffuse ash plumes were emitted during the reporting period; an ash plume possibly rose to an altitude of 3.8 km (12,500 ft) a.s.l. on 1 June. Video camera images showed steam-and-gas emissions. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome. The Level of Concern Color Code remained at Orange. Based on analysis of satellite imagery, the Tokyo VAAC reported on 7 June that a possible eruption produced a plume that rose to an altitude of 3.4 km (11,000 ft) a.s.l. and drifted SW. A report a few hours later stated that ash emissions were continuing.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

27 May-2 June 2009 Cite this Report

KVERT reported that during 22-29 May seismic activity from Shiveluch was above background levels. Steam-and-gas emissions were seen during 21-23 May. Based on video camera views, gas-and-steam plumes containing a small amount of ash rose to an altitude of 4 km (13,100 ft) a.s.l. on 22 May. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 May-26 May 2009 Cite this Report

KVERT reported that during 15-22 May seismic activity from Shiveluch was above background levels. A hot avalanche seen on a video camera on 16 May produced an ash plume that rose to an altitude of 4.5 km (14,800 ft) a.s.l. During 17-18 May, observers reported active fumaroles. Based on interpretations of seismic data, ash plumes were likely present during the reporting period; a possible ash plume rose to an altitude of 5.3 km (17,400 ft) a.s.l. on 21 May. Analysis of satellite imagery revealed a daily thermal anomaly over the lava dome. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 May-19 May 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 8-15 May. Based on interpretations of seismic data, occasional ash plumes likely rose to an altitude of 5.4 km (17,700 ft) a.s.l. On 13 May, an ash plume generated by a hot avalanche was seen on video and rose to an altitude of 5 km (16,400 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly from the lava dome. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 May-12 May 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 1-8 May. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 6.7 km (22,000 ft) a.s.l. Analysis of satellite imagery revealed a thermal anomaly from the lava dome every day. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

29 April-5 May 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 28 April-1 May. Based on interpretations of seismic data, ash plumes likely rose to altitudes of 5-6 km (16,400-19,700 ft) a.s.l. During 29-30 April, observers reported active fumaroles. Ash plumes generated by hot avalanches rose to an altitude of 6 km (19,700 ft) a.s.l. and drifted SE. Analysis of satellite imagery revealed an intense thermal anomaly on the lava dome every day. The Level of Concern Color Code remained at Orange. Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that an eruption on 5 May produced a plume that rose to an altitude of 6.7 km (22,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

22 April-28 April 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 17-24 April. Based on interpretations of seismic data, ash plumes likely rose to altitudes of 4.5-5.3 km (14,800-17,400 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. According to observers, fumaroles were active during 16-22 and 22 April. A hot avalanche produced an ash plume that rose to an altitude of 4 km (13,100 ft) a.s.l. on 22 April.

On 25 April, increased seismicity indicated that an ash plume rose to an altitude of 7.5 km (24,600 ft) a.s.l. On 26 April, seismicity remained at high levels; continuous spasmodic tremor and a series of weak shallow earthquakes occurred. An ash explosion from the lava dome was seen on video camera. Ash emitted from a large fissure on the S flank of the lava dome produced plumes that rose to an altitude of 4 km (13,100 ft) a.s.l. and drifted ESE. The Level of Concern Color Code was raised to Red. The next day, seismicity decreased slightly but remained elevated and gas-and-steam emissions with some ash content emanated from the fissure. Based on video camera views and analysis of satellite imagery, plumes rose to altitudes of 3.5-5 km (11,500-16,400 ft) a.s.l. during 27-28 April and drifted 250 km NE. On 28 April, pyroclastic flows originated from areas near the lava dome. The Level of Concern Color Code was lowered to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 April-21 April 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 10-17 April. Based on interpretations of seismic data, ash plumes likely rose to altitudes of 4.5-7.5 km (14,800-24,600 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and ash plumes that drifted about 50 km NW on 13 April. According to observers, fumaroles were active on 15 and 16 April. The Level of Concern Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that eruptions on 19 and 22 April produced plumes that rose to altitudes of 4.6-5.2 km (15,000-17,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

8 April-14 April 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 3-10 April. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 7.5 km (24,600 ft) a.s.l. during 3-5 and 8-9 April. According to observers, fumaroles were active during 3-7 and 9 April. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that eruptions during 11-14 April produced plumes that rose to altitudes of 4.6-5.5 km (15,000-18,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

1 April-7 April 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels 27 March-3 April. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 5.5 km (18,000 ft) a.s.l. According to observers, fumaroles were active daily and explosions produced ash plumes that rose to an altitude of 6 km (19,700 ft) a.s.l. on 31 March. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and an ash plume that drifted 80 km S on 1 April. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 March-31 March 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 20-27 March. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 6 km (19,700 ft) a.s.l. According to observers, fumaroles were active during 23-26 March and explosions produced ash plumes that rose to an altitude of 8 km (26,200 ft) a.s.l. on 24 March. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and an ash plume that drifted 40 km S on 25 March. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that eruptions during 27-28 March produced plumes that rose to altitudes of 4.3-5.5 km (14,000-18,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

18 March-24 March 2009 Cite this Report

KVERT reported that during 13-20 March seismic activity at Shiveluch was above background levels. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 3.5 km (11,500 ft) a.s.l. Analysis of satellite imagery revealed a thermal anomaly on the lava dome during 12-14 and 16-19 March. Strong fumarolic activity was seen on 13, 14, and 18 March and incandescence from the lava dome was seen at night on 14 and 18 March. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 March-17 March 2009 Cite this Report

KVERT reported that during 6-13 March seismic activity at Shiveluch was above background levels and strong fumarolic activity was seen. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 6.2 km (20,300 ft) a.s.l. Incandescence from the lava dome was seen at night. According to observers, ash plumes from hot avalanches rose to an altitude of 6 km (19,700 ft) a.s.l. and drifted SE during 9-10 March. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and ash plumes that drifted about 175 km SE during 7 and 10-11 March. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 March-10 March 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 27 February-6 March. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 5.4 km (17,700 ft) a.s.l. According to observers, fumaroles were active during 28 February and 3-5 March. Ash plumes rose to an altitude of 4.7 km (15,400 ft) a.s.l. and drifted NE during 3-4 March. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and an ash plume that drifted 84 km E on 4 March. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that eruptions on 8 and 10 March produced plumes that rose to altitudes of 6.1-6.4 km (20,000-21,000 ft) a.s.l. Plumes drifted SE on 10 March.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

25 February-3 March 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was at background levels during 21-28 February. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 5.5 km (18,000 ft) a.s.l. Lava flows continued to be active on the S and N flanks. Fumarolic activity was seen during 20-21 and 23-25 February. During 24-25 February, pilots reported dark plumes near the volcano that rose to altitudes of 5 km (16,400 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and an ash plume that drifted 40 km NNE on 25 February. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that eruptions on 25 February and 4 March produced plumes that rose to altitudes of 4.9-5.8 km (16,000-19,000 ft) a.s.l. The plumes drifted W on 25 February.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

18 February-24 February 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was at background levels during 13-20 February. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 4.6 km (15,100 ft) a.s.l. Lava flows continued to be active on the S and N flanks. Fumarolic activity was seen during 12-13 and 19 February. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and an ash plume that drifted 31 km NW on 17 February. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that an eruption on 18 February produced a plume that rose to an altitude of 4.9 km (16,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

11 February-17 February 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 6-13 February. Based on interpretations of seismic data, ash plumes likely rose to altitudes of 5.5 km (18,000 ft) a.s.l. Lava flows continued to be active on the S and N flanks. Analysis of satellite imagery revealed a thermal anomaly on the lava dome during 6 and 8-10 February; clouds prevented observations on the other days during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that an eruption on 12 February produced a plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

4 February-10 February 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 30 January-6 February. Based on interpretations of seismic data, ash plumes likely rose to altitudes of 5.3 km (17,400 ft) a.s.l. Lava flows continued to be active on the S and N flanks. Weak gas-and-steam activity was noted on 30 January and 1 February. Analysis of satellite imagery revealed a large thermal anomaly on the lava dome during 30 January-2 February, and on 5 February. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that an eruption on 7 February produced a plume that rose to an altitude of 4.9 km (16,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

28 January-3 February 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 22-30 January. Based on interpretations of seismic data, ash plumes rose to altitudes of 7 km (23,000 ft) a.s.l. on 22 January and to an altitude of 4 km (13,100 ft) a.s.l. on the other days during the reporting period. Weak gas-and-steam activity was noted during 23-24 and 26-27 January. Analysis of satellite imagery revealed a large daily thermal anomaly over the lava dome. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that eruptions on 30 January and 1 February produced plumes that rose to altitudes of 4.9-5.5 km (16,000-18,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

21 January-27 January 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 16-23 January. Based on interpretations of seismic data, possible ash plumes rose to altitudes of 5.5 km (18,000 ft) a.s.l. on 17 and 21 January and to an altitude of 3 km (9,800 ft) a.s.l. on the other days during the reporting period. Gas-and-steam emissions were noted. On 21 January, an ash plume that was visible on a web camera rose to an altitude of about 4.5 km (14,800 ft) a.s.l. Analysis of satellite imagery revealed a large daily thermal anomaly over the lava dome, gas-and-steam plumes that drifted about 130 km SE, SW, and W during 16-17 and 19-20 January, and an ash plume that drifted 65 km SW on 18 January. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 January-20 January 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 9-16 January. Based on interpretations of seismic data, ash plumes rose to altitudes of 7.3 km (23,900 ft) a.s.l. and 6.9 km (22,600 ft) a.s.l. on 9 and 14 January, respectively, and to an altitude of 5.5 km (18,000 ft) a.s.l. on the other days during the reporting period. Observers reported that ash plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. on 9 January and noted gas-and-steam activity during 8-10 and 12-14 January. Analysis of satellite imagery revealed a large daily thermal anomaly over the lava dome and gas-and-steam plumes that drifted about 70 km S, SE, and NE during 9-11 and 13 January. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that on 18 January an eruption produced a plume that rose to an altitude of 5.8 km (19,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

7 January-13 January 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 2-9 January. Based on interpretations of seismic data, ash plumes rose to an altitude of 8.8 km (28,900 ft) a.s.l. on 7 January and to an altitude of 5.7 km (18,700 ft) a.s.l. on the other days during the reporting period. Analysis of satellite imagery revealed a large daily thermal anomaly on the lava dome and an ash plume that drifted 25 km W on 6 January. Gas-and-steam emissions were seen on 2, 4, and 6 January. Ash deposits were noted in areas about 10 km SW on 7 January. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 December-6 January 2009 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 25 December-2 January. Based on interpretations of seismic data, ash plumes rose to an altitude of 7 km (23,000 ft) a.s.l. on 25 and 26 December, and to an altitude of 5.5 km (18,000 ft) a.s.l. on the other days during the reporting period. An ash plume was seen on 25 December at an altitude of 5.5 km (18,000 ft) a.s.l. and gas-and-steam emissions were noted on 25 and 30 December, and on 1 January. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and an ash plume that drifted 40 km NW on 30 December. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that during 1, 2, 5, and 6 January eruptions produced plumes to altitudes of 4.6-5.8 km (15,000-19,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

24 December-30 December 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 19-26 December. Based on interpretations of seismic data, ash plumes rose to an altitude of 8.5 km (27,800 ft) a.s.l. on 19 and 20 December and to an altitude of 5 km (16,400 ft) a.s.l. during 21-26 December. An ash plume was seen on 22 December at an altitude of 5 km (16,400 ft) a.s.l. and gas-and-steam emissions were noted on 23 and 24 December. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that during 26-27 and 30 December eruptions produced plumes to altitudes of 5.5-7 km (18,000-23,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

17 December-23 December 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 12-19 December. Based on interpretations of seismic data, ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Visual observations of weak gas-and-steam emissions were noted during 12-14 and 18 December. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Based on information from KVERT and analysis of satellite imagery, the Tokyo VAAC reported that during 21-22 December eruptions produced plumes to altitudes of 5.8-8.5 km (19,000-28,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

10 December-16 December 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 5-12 December. Based on interpretations of seismic data, ash plumes rose to an altitude of 5 km (16,400 ft) a.s.l. Visual observations of weak gas-and-steam emissions were noted during 5, 7, and 9-10 December. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that on 11 December eruptions produced plumes to an altitude of 4.6 km (15,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

3 December-9 December 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 28 November-5 December. Based on interpretations of seismic data, ash plumes rose to an altitude of 5.8 km (19,000 ft) a.s.l. According to visual observations, gas-and-steam plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. during 27 and 29-30 November, and 2 December. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 November-2 December 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 21-28 November. Based on interpretations of seismic data, ash plumes rose to an altitude of 5.6 km (18,400 ft) a.s.l. Ashfall was reported in the town of Klyuchi, about 30 km SW, on 22 November. Visual observations confirmed that ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. on 25 November. Fumarolic activity was visible on the web camera during 26-28 November. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and a gas-and-steam plume that drifted about 30 km SE on 26 November. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that on 1 December eruptions produced plumes to an altitude of 4.9 km (16,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

19 November-25 November 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 14-21 November. Based on interpretations of seismic data, ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. Fumarolic activity was visible on the web camera on 16 and 17 November. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and a gas-and-steam plume that drifted about 100 km E on 14 November. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that during 22 and 24-25 November eruptions produced plumes to altitudes of 5.2-5.8 km (17,000-19,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

12 November-18 November 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 6-14 November. Based on interpretations of seismic data, ash plumes rose to an altitude of 6.8 km (22,300 ft) a.s.l. Hot avalanches descended the lava dome on 6 November and produced ash plumes that rose to an altitude of 4 km (13,100 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. On 10 November, an ash plume drifted 30 km E and gas-and-steam plumes drifted 50 km. The Level of Concern Color Code remained at Orange. Fumarolic activity was visible on the web camera on 8, 10, and 12 November.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that on 13 and 16 November eruptions produced plumes to altitudes of 4.9-6.1 km (16,000-20,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

5 November-11 November 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 31 October-7 November. Based on interpretations of seismic data, ash plumes rose to an altitude of 5.2 km (17,100 ft) a.s.l. A large number of daily hot avalanches were observed descending the lava dome and producing ash plumes on 2, 3, and 5 November that rose to an altitude of 3.5 km (11,500 ft) a.s.l. Fumarolic activity was visible on the web camera during 2-3 and 5-6 November. Analysis of satellite imagery revealed a thermal anomaly on the lava dome on 31 October and 1, 2, 3, and 6 November. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that during 8-10 November eruptions produced plumes to altitudes of 4.9-5.8 km (16,000-19,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

29 October-4 November 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 24-31 October. Based on interpretations of seismic data, a large number of hot avalanches were inferred to have descended the lava dome and produced ash plumes that rose to an altitude of 5.2 km (17,100 ft) a.s.l. Ash plumes that rose to an altitude of 5 km (16,400 ft) a.s.l. were seen on 24 October. Fumarolic activity was visible on the web camera during 23-25 and 28-30 October. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that on 2 and 4 November eruption plumes rose to altitudes of 5.2 and 4.6 km (17,000 and 15,000 ft) a.s.l., respectively.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT); Tokyo Volcanic Ash Advisory Center (VAAC)

22 October-28 October 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 17-24 October. Based on interpretations of seismic data, a large number of hot avalanches were inferred to have descended the lava dome and produced ash plumes that rose to an altitude of 6.7 km (22,000 ft) a.s.l. Significant hot avalanches that produced ash plumes to altitudes of 5 km (16,400 ft) a.s.l. were seen on 16 and 20 October. Fumarolic activity was visible on the web camera during 17-20 and 22-23 October. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome, and ash plumes drifted 60 km E on 20 October. Ash plumes about 10 by 11 km and 10 by 5 km in horizontal dimensions drifted about 30-40 km SE on 19 and 22 October, respectively. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

15 October-21 October 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 10-17 October. Based on interpretations of seismic data, a large number of hot avalanches descended the lava dome and produced ash plumes that rose to an altitude of 6 km (19,700 ft) a.s.l. Significant hot avalanches were seen on 13 October. Analysis of satellite imagery revealed a thermal anomaly on the lava dome during 10-11 and 13-14 October, and steam-and-ash plumes with a small amount of ash that drifted 30 km NE on 14 October. Fumarolic activity was visible on the web camera during 10-13 and 16-17 October. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that during 18-20 October eruption plumes rose to altitudes of 4.9-6.7 km (16,000-22,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

8 October-14 October 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 3-10 October. Based on interpretations of seismic data, a large number of hot avalanches descended the lava dome and produced ash plumes that rose to an altitude of 4 km (13,100 ft) a.s.l. Fumarolic activity and gas-and-steam plumes that rose to an approximate altitude of 4.5 km (14,800 ft) a.s.l. were visible on the web camera during 2-5 and 7-9 October. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and steam-and-ash plumes that drifted 30 km N and E on 6 and 7 October.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

1 October-7 October 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 26 September-3 October. A large number of hot avalanches descended the lava dome and produced ash plumes that rose to altitudes of 4-5 km (13,100-16,400 ft) a.s.l. On 28 September, an ash plume that was visible on a web camera rose to an altitude of about 5 km (16,400 ft) a.s.l. Based on interpretations of seismic data, ash explosions likely occurred on 28 September and 1 October and generated ash plumes that rose to an altitude of 7.5 km (24,600 ft) a.s.l. Ashfall was reported in Klyuchi (about 45 km SW) on 1 October. Analysis of satellite imagery revealed a thermal anomaly on the lava dome during 28 September and 1-2 October. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 September-30 September 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 19-26 September. A large number of hot avalanches may have descended the lava dome and produced ash plumes that rose to an altitude of 3.6 km (11,800 ft) a.s.l. Fumaroles on the lava dome were active on 19 September. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. According to a news article, video cameras recorded an eruption that produced an ash plume on 26 September. The ash plume rose to an altitude of 4.5 km (14,800 ft) a.s.l. The Level of Concern Color Code remained at Orange.

Sources: Itar-Tass News; Kamchatkan Volcanic Eruption Response Team (KVERT)

17 September-23 September 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 12-19 September. Video camera data, analysis of seismic data, and visual observations showed that a small hot avalanche descended the SE side of the lava dome, producing an ash plume that rose to an altitude of 6.5 km (21,300 ft) a.s.l. and drifted 100 km NE. Fumaroles were active during 15-18 September; cloud cover prevented visual observations on other days. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 September-16 September 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 5-12 September. A large number of hot avalanches descended the lava dome; ash produced from one of the events rose to an altitude of 5.1 km (16,700 ft) a.s.l. on 10 September. Fumaroles were active during 10-11 September; cloud cover prevented visual observations on other days. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

According to a news article, a small collapse of the SW part of the lava dome on 13 September generated an ash plume that rose to an altitude of 6.5 km (21,300 ft) a.s.l. and drifted 100 km NE.

Sources: Itar-Tass News; Kamchatkan Volcanic Eruption Response Team (KVERT)

3 September-9 September 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 29 August-5 September. Gas-and-steam plumes with a small amount of ash were generated from avalanches on 29 and 30 August and rose to an altitude of 4 km (13,100 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 August-2 September 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 22-29 August. Gas-and-steam plumes with a small amount of ash were generated from avalanches during 22 and 25-28 August. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and that steam-and-ash plumes drifted 80 km SE on 26 and 27 August. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 August-26 August 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 15-22 August. Analysis of satellite imagery revealed a thermal anomaly on the lava dome on 15, 18, and 21 August. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 August-19 August 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 8-15 August. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. Based on information from KEMSD and observations of satellite imagery, the Tokyo VAAC reported that on 15 August an eruption plume rose to an altitude of 4.6 km (15,000 ft) a.s.l. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

6 August-12 August 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 1-8 August, and possibly indicated that ash plumes from explosions rose to an altitude of 4.6 km (15,100 ft) a.s.l. on 6 August. Observations of satellite imagery revealed a thermal anomaly on the lava dome during 1-3 August. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 July-5 August 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 25 July-1 August. According to visual observations, small hot avalanches occasionally descended the lava dome and fumaroles were active on 18 and 22 July. Observations of satellite imagery revealed a thermal anomaly on the lava dome daily during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 July-29 July 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 18-25 July. Moderate fumarolic activity was seen on 18 and 22 July. Observations of satellite imagery revealed a thermal anomaly on the lava dome during 18-22 July; clouds obscured views on other days. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 July-22 July 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 11-18 July and possibly indicated ash explosions up to 4.5 km (14,800 ft) a.s.l. on 17 July. Moderate fumarolic activity was seen on 13 and 15 July. Observations of satellite imagery revealed a thermal anomaly on the lava dome during 10-11 and 13-17 July. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 July-8 July 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch possibly indicated ash explosions on 26 June and was slightly above background levels during 26 June-4 July. Moderate fumarolic activity was seen on 29 June, and 1 and 3 July. Observations of satellite imagery revealed a strong thermal anomaly on the lava dome during 27-29 June and 1-3 July. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 June-1 July 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 20-27 June and possibly indicated ash explosions on 21, 22, and 25 June. According to video footage and visual observations, moderate fumarolic activity was noted on 24 and 25 June and an ash plume at an altitude of 4.2 km (13,800 ft) a.s.l. occurred on 25 June. Observations of satellite imagery revealed a thermal anomaly on the lava dome during 19-20 and 23-25 June. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

18 June-24 June 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 13-20 June. According to video footage and visual observations, moderate fumarolic activity was noted on 13 June. Observations of satellite imagery revealed a thermal anomaly on the lava dome during 12-13 June; clouds obscured views on other days. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

11 June-17 June 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was at background levels during 6-13 June. According to video footage and visual observations, moderate fumarolic activity was noted during 5-9 June. Observations of satellite imagery revealed a daily thermal anomaly in the crater. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 June-10 June 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels on 29 and 30 May and at background levels during 31 May-6 June. Gas-and-ash explosions may have occurred on 29-30 May and 3 June, possibly sending plumes to an altitude of 3.6 km (11,800 ft) a.s.l. According to video footage and visual observations, moderate fumarolic activity was noted during 31 May and 1-5 June. Observations of satellite imagery revealed a daily thermal anomaly in the crater, and a gas-and-steam plume that drifted 20 km WNW on 31 May. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 May-3 June 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 27-28 May and at background levels the other days during 23-30 May. Gas-and-ash explosions may have occurred on 22, 27, and 28 May and produced plumes to an altitude of 4.7 km (15,400 ft) a.s.l. According to video footage and visual observations, hot avalanches descended the lava dome and ash plumes rose to an altitude of 3.6 km (11,800 ft) a.s.l. during 26-27 May. Fumarolic activity was noted during 23-27 May. Observations of satellite imagery revealed a daily thermal anomaly in the crater, and an ash-and-steam plume that drifted 17 km SW on 28 May. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 May-27 May 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was at background levels during 15-17 and 21 May and above background levels the other days during 16-23 May; gas-and-ash explosions may have occurred on 18, 19, and 20 May. According to video footage and visual observations, small hot avalanches descended the lava dome every day and fumarolic activity was noted. A large hot avalanche caused an ash plume to rise to an altitude of 4 km (13,100 ft) a.s.l. on 20 May. The plume drifted E. Observations of satellite imagery revealed that a thermal anomaly was present in the crater daily and an ash-and-steam plume drifted more than 100 km SE on 20 May.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 May-20 May 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels on 12 and 14 May and at background levels the other days during 9-16 May; gas-and-ash explosions may have occurred on 14 May. During 9 and 11-15 May, hot avalanches descended the lava dome and fumarolic activity was noted. Observations of satellite imagery revealed that a thermal anomaly was present in the crater daily. During 11-13 May, ash and steam plumes drifted SE, SW, and NW. An ash plume at an altitude of 3.6 km (11,800 ft) a.s.l. was spotted on 14 May. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that on 20 May an eruption plume rose to an altitude of 5.8 km (19,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

7 May-13 May 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels on 5 May and at background levels the other days during 2-9 May. Based on seismic interpretation, hot avalanches possibly descended the growing lava dome. Video footage and visual observations showed fumarolic activity from the lava dome during 5-6 and 8 May. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 5-8 May. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 April-6 May 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was at background levels during 25 April-2 May. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 27, 28, and 30 April, and 1 May. On 28 April, ash deposits extending about 10 km NW were observed on satellite imagery and possible gas-and-ash explosions were detected by the seismic network. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 April-29 April 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 18-25 April. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 18 and 20-23 April. According to video footage and visual observations, fumarolic activity from the lava dome occurred during 21-23 April. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 April-22 April 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 10-15 April and at background levels on 16 April. According to video footage and visual observations, fumarolic activity from the lava dome occurred during 12-15 April. Based on seismic interpretation, a possible ash plume rose to an altitude of 3 km (9,800 ft) a.s.l. on 14 April. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 11-14 April. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 April-15 April 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels and hot avalanches possibly descended the growing lava dome daily during 4-11 April. According to video footage and visual observations, fumarolic activity from the lava dome also occurred every day. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

2 April-8 April 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 28 March-4 April and hot avalanches possibly descended the growing lava dome daily. According to video footage and visual observations, fumarolic activity from the lava dome was observed during 28-29 March and 1-3 April. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 March-1 April 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 21-28 March and hot avalanches possibly descended the dome during 19-22 March. According to video footage and visual observations, fumarolic activity from the lava dome was observed during 20-24 and 27 March. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 March-25 March 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 14-21 March. Based on seismic interpretation, ash plumes possibly rose to an altitude of 3.5 km (11,200 ft) a.s.l. on 13 and 17 March. According to video footage and visual observations, an ash plume rose to an altitude of 4 km (12,800 ft) a.s.l. on 17 March and fumarolic activity from the lava dome was observed during 17 and 19-20 March. Observations of satellite imagery revealed that a gas plume drifted 17 km SW on 17 March and a thermal anomaly was present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 March-18 March 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 7-14 March. Based on seismic interpretation, ash plumes possibly rose to an altitude of 4.1 km (13,500 ft) a.s.l. on 6 and 7 March. According to video footage and visual observations, fumarolic activity from the lava dome was observed during 6-8 March. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 March-11 March 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels and small hot avalanches descended the lava dome during 29 February-7 March. Ash plumes were possibly present. According to video footage and visual observations, fumarolic activity was observed during 29 February and 2-6 March. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

27 February-4 March 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels and small hot avalanches descended the lava dome during 22-29 February. According to video footage, fumarolic activity was observed during 21-22 and 24-25 February. Based on seismic interpretation, ash plumes possibly rose to an altitude of 5.6 km (18,400 ft) a.s.l. during 24-26 February. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

20 February-26 February 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 15-22 February. Based on seismic interpretation, ash plumes possibly rose to an altitude of 3 km (10,000 ft) a.s.l. on 17 and 20 February. During the reporting period strong fumarolic activity was seen daily on video footage and a thermal anomaly was present in the crater on satellite imagery. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

13 February-19 February 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 8-11 February and at background levels on 12 and 13 February. Based on seismic interpretation, ash plumes possibly rose to an altitude of 3.3 km (10,800 ft) a.s.l. on 9 February. Strong fumarolic activity was noted during 8-9 and 11-12 February. According to observations of satellite imagery, a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 February-12 February 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 1-8 February. Based on seismic interpretation, ash plumes rose to an altitude of 3.8 km (12,200 ft) a.s.l. daily. Strong fumarolic activity was noted on 5 and 6 February. According to observations of satellite imagery, a thermal anomaly was present in the crater on 1, 3, and 6 February. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

30 January-5 February 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 25 January-1 February. Based on seismic interpretation, ash plumes rose to an altitude of 3.9 km (12,800 ft) a.s.l. daily. Fumarolic activity was noted on 24, 29, and 30 January. According to observations of satellite imagery, a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 January-29 January 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 18-25 January. Based on seismic interpretation, ash plumes rose to an altitude of 4.3 km (14,100 ft) a.s.l. during 17-18, 20, and 23 January. Fumarolic activity was noted on 19, 20, and 22 January. Based on observations of satellite imagery, a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 January-22 January 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 11-18 January. Based on seismic interpretation, ash plumes rose to an altitude of 4.1 km (13,500 ft) a.s.l. on 12 and 16 January. Ash plumes at an altitude of 4.5 km (14,800 ft) a.s.l. were visible on the Shiveluch web camera on 16 January. Strong fumarolic activity was noted during 15-17 January. Based on observations of satellite imagery, a thermal anomaly was present in the crater every day. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 January-15 January 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 4-11 January. Based on seismic interpretation, ash plumes rose to an altitude of 6.3 km (20,700 ft) a.s.l. during 3-4, 6, and 9 January. Strong fumarolic activity was noted during 7-9 January. Based on observations of satellite imagery, a gas-and-steam plume drifted NW on 3 January and a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 4.9 and 4.6 km (16,000 and 15,000 ft) a.s.l. on 10 and 16 January, respectively.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

2 January-8 January 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 28 December-4 January. Based on seismic interpretation, ash plumes rose to an altitude of 5.8 km (19,000 ft) a.s.l. during 28-31 December and on 1 and 3 January. Moderate fumarolic activity was noted on 30 December and 2 January. Based on observations of satellite imagery, a thermal anomaly was present in the crater every day. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 6.4 and 4.9 km (21,000 and 16,000 ft) a.s.l. on 4 and 6 January, respectively.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

26 December-1 January 2008 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 21-28 December. Gas-and-steam plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. during 23-24 December. Based on observations of satellite imagery, a thermal anomaly was present in the crater every day. The Level of Concern Color Code remained at Orange.

Based on observations of satellite imagery and information from the KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 4.9-5.8 km (16,000-19,000 ft) a.s.l. during 28-29 December.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

19 December-25 December 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 14-21 December. Based on seismic interpretation, a series of explosions during 18-19 December produced ash plumes that rose to altitudes of 6.5-8.7 km (21,300-29,000 ft) a.s.l. Ash plumes were observed on satellite imagery and drifted more than 130 km W on 18 December and 300 km to the NW and SW on 19 December. Ashfall was reported in the town of Klyuchi, about 30 km SW on 19 December. Based on visual observations, large pyroclastic flow deposits 8-9 km from the lava dome were noted on the S flank. On 20 December, KVERT reported that the Level of Concern Color Code was raised to Red. On 21 December, the Level of Concern Color Code was lowered back to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 December-18 December 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 7-14 December. Based on seismic interpretation, ash plumes rose to an altitude of 5 km (16,400 ft) a.s.l. during 7-9 December. Visual observations and video footage analysis indicated that an ash plume rose to an altitude of 5 km (16,400 ft) a.s.l. on 12 December and gas-and-steam plumes rose to altitudes of 4-5 km (13,100-16,400 ft) a.s.l. during the reporting period. Based on observations of satellite imagery, a thermal anomaly was present in the crater every day. On 18 December, KVERT reported that the number of shallow earthquakes increased from 70 on 10 December to 390 on 17 December. KVERT warned that the aviation hazard increased. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 December-11 December 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 30 November-7 December. Based on seismic interpretation, ash plumes rose to an altitude of 5.3 km (17,000 ft) a.s.l. and hot avalanches occurred. Visual observations and video footage analysis indicated that gas-and-steam plumes rose to altitudes of 4-5 km (13,100-16,400 ft) a.s.l. during the reporting period. One ash plume rose to an altitude of 5.7 km (18,700 ft) a.s.l. on 2 December. Based on observations of satellite imagery, a thermal anomaly was present in the crater every day during 30 November-7 December. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that an eruption plume rose to an altitude of 5.2 km (17,000 ft) a.s.l. on 10 December.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

28 November-4 December 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 23-30 November. Based on seismic interpretation, ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. and hot avalanches occurred. Visual observations and video footage analysis indicated that gas-and-steam plumes rose to an altitude of 5 km (16,400 ft) a.s.l. on 22 and 26-29 November. Based on observations of satellite imagery, ash plumes drifted SW, NW, N, and SE on 26, 27, and 28 November and a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 5.5 km and 5.8 km (18,000 ft and 19,000 ft) a.s.l. on 30 November and 2 December, respectively.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

7 November-13 November 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 2-9 November. Based on seismic interpretation, ash plumes rose to an altitude of 8.5 km (28,000 ft) a.s.l. and small hot avalanches occurred. Visual observations and video footage analysis indicated that ash and gas-and-steam plumes rose to altitudes of 6-8 km (19,700-26,200 ft) a.s.l. during 4-8 November. Clouds obscured views of the volcano on other days. Based on observations of satellite imagery, ash plumes drifted SW on 7 November and a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 4.9-5.5 km (16,000-18,000 ft) a.s.l. on 11 and 13 November.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

31 October-6 November 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 26 October-2 November. Based on seismic interpretation, ash plumes rose to an altitude of 6.8 km (22,300 ft) a.s.l. and small hot avalanches occurred. Observations of video footage indicated that ash and gas-and-steam plumes rose to altitudes of 5-5.3 km (16,400-17,400 ft) a.s.l. on 25, 26, and 31 October, and 1 November. Based on observations of satellite imagery, ash plumes drifted SE during 27-31 October and a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from KVERT and KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 5.2-8.5 km (17,000-28,000 ft) a.s.l. during 4-6 November.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

24 October-30 October 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 19-26 October. Based on seismic interpretation, ash plumes rose to an altitude of 6.9 km (22,600 ft) a.s.l. and small hot avalanches occurred. Observations of video footage indicated that gas-and-steam plumes rose to altitudes of 3.3 km (10,800 ft) a.s.l. on 21 and 25 October. Based on observations of satellite imagery, ash plumes drifted SE on 19 October and a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 4.6-6.7 km (15,000-22,000 ft) a.s.l. during 27-28 and 30 October.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

17 October-23 October 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 12-19 October. Based on seismic interpretation, ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. and small hot avalanches occurred. Observations of video footage indicated that gas and occasionally ash plumes rose to altitudes of 5.5 km (18,000 ft) a.s.l. during 11-12 and 14-15 October. Based on observations of satellite imagery, ash plumes drifted E on 12, 14, and 16 October and a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 4.6-6.7 km (15,000-22,000 ft) a.s.l. on 18, 20, 22, and 23 October.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

10 October-16 October 2007 Cite this Report

During 5-12 October, KVERT reported that seismic activity at Shiveluch was above background levels and small hot avalanches occurred. Based on seismic interpretation, ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. during 4-6 and 9-11 October. Observations of video footage indicated that gas and occasionally ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. on 4, 6, 7, and 11 October. Fumarolic activity was noted on 8 October. Based on observations of satellite imagery, ash plumes drifted E during 4-8 October and a thermal anomaly was present in the crater every day during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that an eruption plume rose to an altitude of 5.2 km (17,000 ft) a.s.l. on 16 October.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

3 October-9 October 2007 Cite this Report

During 28 September-5 October, KVERT reported that seismic activity at Shiveluch was above background levels. Based on seismic interpretation, ash plumes rose to an altitude of 5.3 km (17,400 ft) a.s.l. and hot avalanches occurred on 27 and 29 September. Ash plumes were visible on satellite imagery drifting WSW and SE. Observations of video footage indicated that gas-and-steam plumes rose up to altitudes of 4.5 km and 3.5 km (14,800 and 11,500 ft) a.s.l. on 27 September and 2 October, respectively. Fumarolic activity was noted on 1 October. A thermal anomaly was present in the crater on satellite imagery during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information from the KEMSD, the Tokyo VAAC reported that an eruption plume rose to an altitude of 5.8 km (19,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

26 September-2 October 2007 Cite this Report

During 21-28 September, KVERT reported that seismic activity at Shiveluch was above background levels and hot avalanches occurred. Based on seismic interpretation, ash plumes rose to an altitude of 4.3 km (14,100 ft) a.s.l. on 20 and 25 September. Observations of video footage indicated that gas-and-ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. on 21, 24, 25, and 26 September. Plumes drifted E during 24-25 September. A thermal anomaly was present in the crater on satellite imagery during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 September-25 September 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 14-21 September. During 14-15 and 17-20 September, avalanches occurred and ash plumes rose to altitudes of 3.5-5.5 km (11,500-18,000 ft) a.s.l. Observations of video data indicated that gas-and-ash plumes rose to an altitude of 3.3 km (10,800 ft) a.s.l. and drifted NE and E on 14 and 15 September. Gas-and-steam plumes were noted on 13, 18, and 19 September. A thermal anomaly was present in the crater on satellite imagery during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

12 September-18 September 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 7-14 September. During 6-9 September, avalanches occurred and ash plumes rose to altitudes of 4-6.5 km (13,100-21,300 ft) a.s.l. Observations of video data indicated that ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. on 7 September. Gas-and-steam plumes were noted on 7, 10, and 11 September. A thermal anomaly was present in the crater on satellite imagery during the reporting period. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

5 September-11 September 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 31 August-7 September. Based on seismic interpretation during this interval, avalanches and ash plumes that rose to an altitude of 5.7 km (18,700 ft) a.s.l. Visual observation and video data indicated that ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. on 1 September and drifted SE. Gas-and-steam plumes were noted on the other days. Observations of satellite imagery revealed a thermal anomaly present in the crater during the reporting period. The Level of Concern Color Code remained at Orange.

Based on information reported from KEMSD, the Tokyo VAAC reported that an eruption plume rose to an altitude of 4.9 km (16,000 ft) a.s.l. on 9 September. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

29 August-4 September 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 24-31 August. Based on seismic interpretation, avalanches and ash plumes that rose to an altitude of 9 km (29,500 ft) a.s.l. occurred during the reporting period. Based on visual observation and video data, ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. on 25 August. Clouds inhibited observations the other days. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 24-31 August. The Level of Concern Color Code remained at Orange.

Based on information reported from KEMSD, the Tokyo VAAC reported that an eruption plume rose to an altitude of 5.5 km (18,000 ft) a.s.l. on 2 September. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

22 August-28 August 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was above background levels during 17-24 August. Based on seismic interpretation, avalanches and ash plumes that rose to an altitude of 8.5 km (27,900 ft) a.s.l. occurred during the reporting period. Based on visual observation, ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted N and NE during 17-21 August. Incandescence at the lava dome and incandescent avalanches were seen at night on 21 August. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 17-24 August. The Level of Concern Color Code remained at Orange.

Based on information reported from KEMSD, the Tokyo VAAC reported that eruption plumes rose to altitudes of 4.9-7.6 km (16,000-25,000 ft) a.s.l. during 24-27 August. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

15 August-21 August 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 10-17 August. Based on seismic interpretation, avalanches and ash plumes that rose to an altitude of 10 km (32,800 ft) a.s.l. occurred during the reporting period. Growth of the E part of the lava dome, summit incandescence, and incandescent avalanches were visible from the town of Klyuchi, about 50 km SW, during 11-12 August. A diffuse ash plume was visible on satellite imagery drifting SE on 11 August. On 14 August, two avalanches were accompanied by ash plumes that rose to an altitude of 4.5 km (14,800 ft) a.s.l. and drifted NW. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 10-17 August. The Level of Concern Color Code remained at Orange.

Based on information reported from KEMSD, the Tokyo VAAC reported that an eruption plume rose to 5.2 km (17,000 ft) a.s.l. on 21 August. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

8 August-14 August 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 3-10 August. Based on seismic interpretation, avalanches and ash plumes that rose to an altitude of 6 km (19,700 ft) a.s.l. occurred during the reporting period. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 2-5 and 8-9 August. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that ash plumes rose to altitudes of 4.6-10.1 km (15,000-33,000 ft) a.s.l. during 12-13 August. Based on seismic interpretation, a high plume occurred again on 13 August. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

1 August-7 August 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 27 July-3 August. Observations of satellite imagery revealed that a thermal anomaly was present in the crater. Based on seismic interpretation, ash plumes and avalanches occurred during the reporting period. Gas-and-steam plumes were visible drifting S on 31 July; clouds inhibited visual observations on other days. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

25 July-31 July 2007 Cite this Report

KVERT reports noted that seismic activity at Shiveluch continued above background levels during 20-27 July. Based on seismic interpretation, during this interval ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. Gas-and-steam plumes with some ash rose to altitudes of 3.0-4.5 km (9,800-14,800 ft) a.s.l. during 20-24 July. Based on satellite imagery, gas-and-steam plumes drifted S on 22 July and a large thermal anomaly was detected in the crater during 20-27 July. Through at least 27 July, the Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

18 July-24 July 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 13-20 July. Based on seismic interpretation, ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. during the reporting period. Gas-and-steam plumes with some ash rose to altitudes of 3-4.5 km (9,800-14,800 ft) a.s.l. during 11-15 and 18-19 July. Based on satellite imagery, plumes drifted S and SW during 15-16 July and a large thermal anomaly was detected in the crater during 13-20 July. The Level of Concern Color Code remained at Orange.

Based on information reported from KEMSD, the Tokyo VAAC reported that an eruption plume rose to 5.8 km (19,000 ft) a.s.l. on 24 July. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

11 July-17 July 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 6-13 July. Based on seismic interpretation, ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. during the reporting period. Gas-and-steam plumes rose to altitudes of 4-5 km (13,100-16,400 ft) a.s.l. during 9-11 July. A large thermal anomaly was detected in the crater on satellite imagery all days. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

4 July-10 July 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 29 June-6 July. Based on seismic interpretation, ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. during the reporting period. A large thermal anomaly was detected in the crater on satellite imagery all days. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that an eruption plume rose to 4.6 km (15,000 ft) a.s.l. during 27-28 June. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

27 June-3 July 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 22-29 June. Based on seismic interpretation, ash plumes rose to an altitude of 6.5 km (21,300 ft) a.s.l. during the reporting period. A large thermal anomaly was detected in the crater on satellite imagery all days. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that an eruption plume rose to 4.6 km (15,000 ft) a.s.l. during 27-28 June. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

20 June-26 June 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 15-22 June. Based on seismic interpretation, ash plumes rose to an altitude of 5.3 km (17,400 ft) a.s.l. during the reporting period. On 15 June, gas-and-steam plumes drifted S. A large thermal anomaly was detected in the crater on satellite imagery during 14-17 and 20 June. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD, the Tokyo VAAC reported that an eruption plume rose to 5.8 km (19,000 ft) a.s.l. during 25-26 June. Ash was not identified on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

13 June-19 June 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 8-15 June and a thermal anomaly in the crater was detected on satellite imagery. Gas-and-steam plumes rose to altitudes of 4 km (13,100 ft) a.s.l. during 8-10 and 13 June. Ash plumes rose to altitudes of 4.5 km (14,800 ft) a.s.l. on 8 and 10 June and were seen on satellite imagery drifting NW on 12 June. Based on seismic interpretation, multiple ash plumes rose to 6.3 km (20,700 ft) a.s.l. during 8-15. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

6 June-12 June 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 1-8 June and a thermal anomaly in the crater was detected on satellite imagery. Gas-and-steam plumes rose to altitudes of 4.5 km (14,800 ft) a.s.l. during 1-3 and 5 June. Ash plumes rose to altitudes of 4.5-6 km (14,800-19,700 ft) a.s.l. on 1 and 6 June and were seen on satellite imagery drifting S and SE on 3 and 6 June. Based on seismic interpretation, multiple ash plumes rose to 6.5 km (21,300 ft) a.s.l. during 1-8. The Tokyo VAAC reported that eruption plumes rose to altitudes of 4.3-9.1 km (14,000-30,000 ft) a.s.l. on 9, 11, and 12 June, based on information from KVERT and KEMSD. Ash was not identified on satellite imagery. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

30 May-5 June 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 25 May-1 June. Based on seismic interpretation, ash plumes possibly rose to an altitude of 9.5 km (31,200 ft) a.s.l. throughout the reporting period. According to visual observation and video data, gas-and-steam and ash plumes rose to altitudes of 5-6 km (16,400-19,700 ft) a.s.l. during 27-28 and 30-31 May. Plumes were seen on satellite imagery drifting SW during 27-28 May. A large thermal anomaly was also visible on satellite imagery. The Tokyo VAAC reported that based on reports from KEMSD, an eruption plume rose to an altitude of 6.4 km (21,000 ft) a.s.l. on 2 June. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

23 May-29 May 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 18-25 May. Based on seismic interpretation, ash plumes possibly rose to altitudes of 4-8 km (13,100-26,200 ft) a.s.l. throughout the reporting period. Plumes were visible on satellite imagery drifting N, NE, and NW during 17-19 May. A large thermal anomaly was also visible on satellite imagery. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

16 May-22 May 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 11-18 May. Based on seismic interpretation, ash plumes possibly rose to an altitude of 6 km (19,700 ft) a.s.l. throughout the reporting period. A large thermal anomaly was visible on satellite imagery. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

9 May-15 May 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 4-11 May. Based on seismic interpretation, observation, and video data, ash plumes possibly rose to altitudes of 6-7 km (19,700-23,000 ft) a.s.l. throughout the reporting period. Plumes were seen on satellite imagery drifting E on 5 and 7 May and a thermal anomaly was present during 4-11 May. Gas-and-steam activity was noted during 4-7 May. Visual and video data revealed hot avalanches originating from the lava dome during 4 and 6-7 May. Based on information from the KEMSD, the Tokyo VAAC reported that ash plumes rose to altitude of 5.8-8.2 km (19,000-27,000 ft) a.s.l. during 9-11 May. An ash plume was possibly seen on satellite imagery to an altitude of 4.9 km (16,000 ft) a.s.l. drifting NW on 15 May. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

2 May-8 May 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 27 April-4 May. Based on seismic interpretation, observation, and video data, ash-and-steam plumes possibly rose to altitudes of 4-10 km (13,100-32,800 ft) a.s.l. throughout the reporting period. Plumes were seen on satellite imagery drifting S and SW during 28-29 April and a thermal anomaly was present during 27 April-4 May. Based on visual and video data, hot avalanches originating from the lava dome were observed on 30 April. Based on information from the KEMSD, the Tokyo VAAC reported that an ash plume rose to an altitude of 4.9 km (16,000 ft) a.s.l. on 7 May. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Itar-Tass News; Kamchatkan Volcanic Eruption Response Team (KVERT)

25 April-1 May 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 20-27 April. Based on seismic interpretation, observation, and video data, ash-and-steam plumes possibly rose to altitudes of 6.5-9 km (21,300-30,000 ft) a.s.l. throughout the reporting period. Plumes were seen on satellite imagery drifting E and SE, and a thermal anomaly was present. Hot avalanches originated from the dome. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

18 April-24 April 2007 Cite this Report

KVERT reported that seismic activity at Shiveluch continued above background levels during 13-20 April. Based on seismic interpretation, observation, and video data, ash-and-steam plumes possibly rose to altitudes of 5.5-6.5 km (18,000-21,300 ft) a.s.l. throughout the reporting period. Plumes were seen on satellite imagery drifting E, SE, and S and a thermal anomaly was present. Base on pilot reports, satellite imagery, KEMSD, and observations from the Petropavlovsk-Kamchatsky Flight Information Region (FIR), the Tokyo VAAC reported that ash plumes rose to altitudes of 4.6-6.1 km (15,000-20,000 ft) a.s.l. during 18-22 April. They drifted E. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

11 April-17 April 2007 Cite this Report

Seismic activity at Shiveluch continued above background levels during 4-10 April. Based on seismic interpretation, observation, and video data, possible ash-and-steam plumes rose to altitudes of 4.5-7 km (14,800-23,000 ft) a.s.l. throughout the reporting period. Based on satellite imagery during 10-12 April, plumes drifted N, NW, SE, and SW and a thermal anomaly was present. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

4 April-10 April 2007 Cite this Report

Seismic activity at Shiveluch continued above background levels during 4-10 April. Based on seismic interpretation, observation, and video data, ash-and-steam plumes rose to altitudes of 4.5-5 km (14,800-16,400 ft) a.s.l. throughout the reporting period. Plumes drifted N on 6 April. A large thermal anomaly was visible on satellite imagery during 1-10 April. The Level of Concern Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 March-3 April 2007 Cite this Report

An explosive event at Shiveluch on 29 March produced an ash plume that rose to an estimated altitude of 9.8 km (32,000 ft) a.s.l. and drifted NE. Based on reports from the Yelizovo Meteorological Watch Office and satellite imagery, the Tokyo VAAC reported that the plume reached an altitude of 11.9 km (39,000 ft) a.s.l. The next day, an explosive event that lasted about 6 minutes produced a plume to altitudes of 10.1-12.2 km (33,000-40,000 ft) a.s.l., based on estimates from AVO, Tokyo VAAC, and the Kamchatkan Branch of Geophysical Services. The plume drifted NE.

According to a news article, a mudflow covered an approximately 900-m-long section of road, about 20 km from Shiveluch on 31 March.

Sources: US Geological Survey Alaska Volcano Observatory (AVO); Itar-Tass News

21 March-27 March 2007 Cite this Report

Based on satellite imagery, the Tokyo VAAC reported that emissions of gas and steam from Shiveluch continued on 22 March. Ash was not identified on satellite imagery.

Source: Tokyo Volcanic Ash Advisory Center (VAAC)

21 February-27 February 2007 Cite this Report

Seismic activity at Shiveluch continued above background levels during 16-22 February. Based on seismic interpretation, observation, and video data, gas-and-ash plumes rose to altitudes of 6 km (19,700 ft) a.s.l. throughout the reporting period. Plumes drifted S, NW, and N. A large thermal anomaly was visible on satellite imagery. The Tokyo VAAC reported eruption plumes to altitudes of 4.6 km (15,000 ft) a.s.l. on 22 February based on information from KEMSD, KVERT, and satellite imagery. Plumes drifted N. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

14 February-20 February 2007 Cite this Report

Activity at Shiveluch continued above background levels during 9-16 February, with over 180 volcanic earthquakes and tremor occurring daily. Based on seismic interpretation, observation, and video data, gas-and-ash plumes rose to altitudes of 5.5-6 km (18,000-19,700 ft) a.s.l. throughout the reporting period. Plumes drifted W and SW. A large thermal anomaly was visible on satellite imagery. The Tokyo VAAC reported eruption plumes to altitudes of 5.2-6.1 km (17,000-20,000 ft) a.s.l. on 15 and 19 February based on information from KEMSD, KVERT, and satellite imagery. Plumes drifted NW on 19 February. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

7 February-13 February 2007 Cite this Report

Activity at Shiveluch continued above background levels during 2-9 February, with over 200 shallow earthquakes occurring daily. Based on seismic interpretation, observation, and video data, gas-and-ash plumes rose 4.0-5.5 km (13,100-18,000 ft) a.s.l. throughout the reporting period. Plumes drifted NE and NW. A large thermal anomaly was visible on satellite imagery. The Tokyo VAAC reported ash plumes to an altitude of 5.2-5.5 km (17,000-18,000 ft) a.s.l. on 10 and 13 February that were visible on satellite imagery. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

31 January-6 February 2007 Cite this Report

Activity at Shiveluch continued above background levels during 26 January-2 February, with over 140 shallow earthquakes occurring daily. Based on seismic interpretation, observation, and video data, gas-and-ash plumes rose 3.5-4.5 km (11,500-14,800 ft) a.s.l. throughout the reporting period. Plumes drifted ESE. A large thermal anomaly was visible on satellite imagery. The Tokyo VAAC reported ash plumes that rose to an altitude of 4.3 km (14,000 ft) a.s.l. on 1 February were visible on satellite imagery drifting E. An eruption occurred on 6 February that was not visible on satellite imagery. The Level of Concern Color Code remained at Orange.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

24 January-30 January 2007 Cite this Report

Activity at Shiveluch continued above background levels during 19-26 January, with over 120 shallow earthquakes occurring daily. Based on seismic interpretation and observation and video data, gas-and-ash plumes rose to 5.5 km (18,000 ft) a.s.l. and avalanches occurred throughout the reporting period. Plumes drifted W and NW. Fumarolic activity from the SW flank was noted on 25 January. A large thermal anomaly was visible on satellite imagery. Based on satellite imagery, the Tokyo VAAC reported that ash plumes rose to an altitude of 4.6 km (15,000 ft) a.s.l. on 28 and 29 January and drifted SE.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

17 January-23 January 2007 Cite this Report

Activity at Shiveluch continued above background levels during 12-19 January, with over 160 shallow earthquakes occurring daily. Based on seismic interpretation, ash plumes rose to 6.5 km (21,300 ft) a.s.l. and avalanches occurred throughout the reporting period. According to observation and video data, gas-and-ash plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. on 16 January. Plumes drifted SW, NW, and NE on 12 and 14-18 January. A large thermal anomaly over the dome was noted. Based on satellite imagery, the Tokyo VAAC reported that ash plumes rose to an altitude of 6.1 km (20,000 ft) a.s.l. on 22 and 23 January and drifted NW.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

10 January-16 January 2007 Cite this Report

Activity at Shiveluch continued above background levels during 5-12 January, with over 200 shallow earthquakes occurring daily. Based on seismic interpretation, ash plumes rose to 7.5 km (24,600 ft) a.s.l. and avalanches occurred throughout the reporting period. According to observation and video data, gas-and-ash plumes rose to an altitude of 6 km (19,700 ft) a.s.l. during 5-7 and 10-11 January. Plumes drifted E and SSW. A large thermal anomaly over the dome was noted.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

3 January-9 January 2007 Cite this Report

Activity at Shiveluch continued above background levels during 29 December-5 January, with 200 shallow earthquakes occurring daily. Based on seismic interpretation, ash plumes rose to 13.7 km (45,000 ft) a.s.l. According to visual and video data, a large hot avalanche occurred on the SE flank on 4 January. Fumarolic activity was noted during 29-31 December and 2-4 January. The Tokyo VAAC reported eruption plumes to altitudes of 4.3-7.6 km (14,000-25,000 ft) a.s.l. during 5-7 January based on information from the Kamchatkan Experimental and Methodical Seismological Department (KEMSD) and satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

27 December-2 January 2007 Cite this Report

KVERT reported that seismic activity from Shiveluch decreased on 27 December, but still remained above background levels. Based on video data, a steam-and-gas plume rose to 3.5 km (11,500 ft) a.s.l. on 27 December. On 28 December, ash plumes rose to 10 km (32,800 ft) a.s.l. and were seen on satellite imagery drifting E. The level of Concern Color Code was lowered to Orange.

Based on information from the Kamchatkan Experimental & Methodical Seismological Department (KEMSD) and satellite imagery, the Tokyo VAAC reported that eruptions produced plumes rising to 4.9-8.2 km (16,000-27,000 ft) a.s.l. on 1 and 2 January.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

20 December-26 December 2006 Cite this Report

According to observations, video data, and satellite imagery KVERT reported that ash plumes from Shiveluch rose to 10 km (32,800 ft) a.s.l. and drifted E on 16-17 and 20 December. Seismic activity was generally at background levels. Based on satellite imagery, the Tokyo VAAC reported that a possible eruption plume rose to an altitude of 9.1 km (30,000 ft) a.s.l. and drifted E on 24 December. Seismic and video data on 26 December indicated an ash plume above 10 km (32,800 ft.) a.s.l., extending 150 km NE in satellite imagery. The level of Concern Color Code was raised from Orange to Red.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

13 December-19 December 2006 Cite this Report

According to observations and video data, KVERT reported that ash plumes from Shiveluch rose to 4 km (13,100 ft) a.s.l. and drifted NW and ESE on 8 and 12 December, respectively. Based on satellite imagery, ash plumes rose to altitudes of 6-7.5 km (19,700-24,600 ft) a.s.l. and drifted E and NE during 8-15 December. Seismic activity was generally at background levels. The Tokyo VAAC and KVERT reported that ash plumes rose to altitudes of 7.6-10 km (25,000-32,800 ft) a.s.l. and drifted E and NW on 16 and 17 December.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

6 December-12 December 2006 Cite this Report

According to observations and video data, KVERT reported fumarolic activity from Shiveluch during 2-4 and 6-7 December. Based on satellite imagery, the Tokyo VAAC reported possible eruption plumes on 8 and 11 December that reached altitudes of 5.2 km (17,000 ft) a.s.l. and drifted SW and NE, respectively. Satellite imagery and a pilot observation reported by the VAAC indicated ash plumes on 12 December to altitudes of 3-5.8 km (10,000-19,000 ft) a.s.l.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

29 November-5 December 2006 Cite this Report

KVERT reported that a strong seismic event from Shiveluch was recorded on 4 December at 2100. Prior to the event, seismicity was at background levels and weak fumarolic activity was observed. According to video data from 5 December, explosions produced plumes that rose to an altitude of 4 km (13,100 ft) a.s.l. and drifted NW. Strong explosions from the lava dome were possible and avalanches to a distance of 3-5 km down the SW flank were noted. The Level of Concern Color Code was raised from Yellow to Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 July-25 July 2006 Cite this Report

Eruption plumes from Shiveluch that were visible on satellite imagery on 19 July reached a maximum altitude of 5.2 km (17,000 ft) a.s.l. and drifted SE. Ash was not visible on satellite imagery. A thermal anomaly over the dome was visible on 17 and 18 July.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC); Kamchatkan Volcanic Eruption Response Team (KVERT)

2 November-8 November 2005 Cite this Report

Seismic activity and lava-dome growth continued at Shiveluch during 28 October to 4 November. Seismicity decreased gradually during the previous 2 weeks and only weak avalanches were recorded, so KVERT reduced the Concern Color Code at Shiveluch from Orange to Yellow on 4 November.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

26 October-1 November 2005 Cite this Report

The growth of Shiveluch's lava dome continued during 21-28 October. Weak shallow earthquakes, hot avalanches, and low-intensity fumarolic activity occurred at the volcano during the week. On 22 and 24 October, incandescence was visible at the lava dome. A weak ash-and-gas plume extending E was observed on 22 October. Shiveluch remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

19 October-25 October 2005 Cite this Report

The growth of Shiveluch's lava dome continued during 14-21 October. Weak shallow earthquakes, hot avalanches, and low-intensity fumarolic activity occurred at the volcano during the week. On 15 and 17 October, incandescence was visible at the lava dome. A thermal anomaly from the lava dome was seen in satellite imagery during the report week. Shiveluch remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

28 September-4 October 2005 Cite this Report

Growth of Shiveluch's lava dome and heightened seismicity continued at the volcano during 23-30 September. Weak gas-and-steam plumes, thermal anomalies at the lava dome, and new pyroclastic-flow deposits, were noted during the report week. Shiveluch remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

21 September-27 September 2005 Cite this Report

KVERT raised the Concern Color Code at Shiveluch from Orange to Red (the highest level) on 22 September. According to interpretations of seismic data, on the 22nd at 1715 a strong eruption began, with ash plumes reaching ~7.5 km (24,600 ft) a.s.l. [corrected by KVERT to 6.5 km (21,300 ft) a.s.l.] and hot avalanches and pyroclastic flows descending the volcano's flanks. The pyroclastic flows extended 10-15 km. The strongest seismic signal of the eruption occurred on 22 September at 2259. Shallower signals recorded between 22 September at 2330 and 23 September at 1200 were possibly associated with ash emissions that rose to 3.5 km (11,500 ft) a.s.l. An ash plume was visible on satellite imagery at a height of ~3 km (9,850 ft) a.s.l. extending ~20 km SSW. The Concern Color Code was reduced to Orange on 23 September.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

14 September-20 September 2005 Cite this Report

Growth of Shiveluch's lava dome continued during 9-16 September. Incandescence was visible at the dome on 13 September. Gas-and-steam plumes rose to 3.5 km (11,500 ft) a.s.l. and a large thermal anomaly was visible on satellite imagery. Shiveluch remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

7 September-13 September 2005 Cite this Report

During 2-9 September, Shiveluch's lava dome continued to grow and viscous lava flowed from it. On 5 September, an ash plume rose to ~4 km (13,100 ft) a.s.l. On 8 September, a hot avalanche was accompanied by an ash plume that rose to a height of ~3.5 km (11,500 ft) a.s.l. A large thermal anomaly was visible at the volcano during the report period. Shiveluch remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

31 August-6 September 2005 Cite this Report

Growth of Shiveluch's lava dome continued during 26 August to 2 September, and viscous lava continued to flow at the lava dome. Several ash plumes reached ~5.5 km (18,050 ft) a.s.l. The volcano remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

24 August-30 August 2005 Cite this Report

Growth of Shiveluch's lava dome continued during 19-26 August. During the report period, about ten shallow earthquakes were recorded, a large thermal anomaly was visible on satellite imagery, and fumarolic activity occurred. A photo taken by Yu Demyanchuk on 19 August showed a new viscous lava flow emitted from the lava dome. The volcano remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

10 August-16 August 2005 Cite this Report

During 5-12 August, Shiveluch's lava dome continued to grow, and a persistent thermal anomaly was visible on satellite imagery. Fumarolic activity and incandes