All times are local unless otherwise stated.

Bezymianny (Russia) | 11 June-17 June 2014 | New Eruptive Activity Cite this Report
Bezymianny Eastern Kamchatka Volcanic Arc	KVERT reported that seismicity at Bezymianny increased on 17 June, when about 12 shallow events were recorded that were thought to be caused by extrusion of material at the top of the lava dome. A thermal anomaly was also identified using satellite data. The Aviation Color Code was raised from Yellow to Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Nishinoshima (Japan) | 11 June-17 June 2014 | New Eruptive Activity Cite this Report
Nishinoshima Ogasawara Volcanic Arc	Photographs and video taken from a Japanese Coast Guard helicopter on 11 and 13 June revealed continuing eruptive activity at Nishinoshima. Steaming along the shoreline indicated at least two locations with active, or recently active, lava ocean entries, possibly tube-fed since no surface incandescence was visible. Night video clearly showed an active lava flow and ocean entry being supplied from lava fountaining out of a cinder cone. A significant steam plume was rising from the center of the lava shield from hot tephra deposits over a broad area rather than a crater. However, pulsating tephra ejections and distinctly brown ash plumes were rising from two smaller craters. An incandescent lava lake was visible in one of the small craters on both days. Similar Coast Guard photos taken on 21 May showed a large ash-bearing plume and Strombolian activity from a larger cinder cone in the center of the island. Minor steaming from two central cinder cones was photographed on 15 April, and incandescent lava could be seen in the crater of one. Source: Japan Coast Guard
Pavlof (United States) | 11 June-17 June 2014 | New Eruptive Activity Cite this Report
Pavlof Aleutian Ridge Volcanic Arc	AVO reported that the eruption at Pavlof continued during 11-16 June. Seismic activity was steady and characterized by intermittent events. Weakly elevated surface temperatures were occasionally observed in mostly cloudy satellite images.The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Sangeang Api (Indonesia) | 11 June-17 June 2014 | New Eruptive Activity Cite this Report
Sangeang Api Sunda Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 14 June an ash plume from Sangeang Api rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 55 km NW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Semisopochnoi (United States) | 11 June-17 June 2014 | New Eruptive Activity Cite this Report
Semisopochnoi Aleutian Ridge Volcanic Arc	AVO reported that an earthquake swarm at Semisopochnoi started at 1000 on 9 June and escalated at 1200 on 12 June. The continuation of the anomalous activity prompted AVO to raise the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory on 13 June. The earthquake swarm was continuing as of 17 June. Five of the six seismic stations on the volcano were operational. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Zhupanovsky (Russia) | 11 June-17 June 2014 | New Eruptive Activity Cite this Report
Zhupanovsky Eastern Kamchatka Volcanic Arc	KVERT reported that satellite images over Zhupanovsky detected gas-and-steam plumes drifting 100 km E on 9 and 11 June. Snow in the region was covered by ash. The Aviation Color Code remained at Yellow. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Bagana (Papua New Guinea) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Bagana Bougainville Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 11-12 June ash plumes from Bagana rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 25-40 km SW and W. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Batu Tara (Indonesia) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Batu Tara Sunda Volcanic Arc	Based on analyses of satellite data, the Darwin VAAC reported an ash plume from Batu Tara on 15 June rising to an altitude of 2.1 km (7,000 ft) a.s.l. and drifting 55 km SW. During 16 June the plume was slightly lower, at 1.5 km (5,000 ft) a.s.l., extending 37 km NW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Dukono (Indonesia) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Dukono Halmahera Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 11 June an ash plume from Dukono rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted over 35 km NE. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Fuego (Guatemala) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Fuego Central America Volcanic Arc	INSIVUMEH reported that explosive activity from Fuego continued in mid-June. Explosions during 12-14 June sent ash plumes as high as 4,600 m (15,000 ft) a.s.l. that drifted 9-11 km S and W. Small avalanches also continued. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Karymsky (Russia) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Karymsky Eastern Kamchatka Volcanic Arc	KVERT reported that Strombolian and weak Vulcanian activity continued at Karymsky during 6-13 June. Satellite images detected a thermal anomaly on 11 June; clouds obscured the volcano on the other days. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Kīlauea (United States) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Kīlauea Hawaiian-Emperor Hotspot Volcano Group	During 11-17 June HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kīlauea's Halemaʻumaʻu Crater. Gas emissions remained elevated. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas; smaller particles may have been dropped several kilometers away. At Puʻu ʻŌʻō Crater, glow emanated from spatter cones on the N, SE, and S portions of the crater floor, and from a small lava lake in the NE spatter cone. On 22 May geologists mapped the farthest point of activity from the Kahauale’a 2 lava flow, 8.4 km NE of Pu’u 'O'o, and on 6 June they mapped four small breakouts as far as 6.5 km from Pu’u 'O'o. Smoke plumes rising from forested areas suggested advancing lava from a new 12 June breakout at the N base of the Pu’u 'O'o cone. Overall, however, this slow-moving flow has appeared to be weakening over the past few months. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
San Miguel (El Salvador) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
San Miguel Central America Volcanic Arc	According to SNET, the Ministerio de Medio Ambiente y Recursos Naturales (MARN) reported that seismicity at San Miguel increased significantly during 11-12 June, and remained very high through 17 June. Webcam images on 17 June showed a small steam plume rising from the summit crater. Source: Servicio Nacional de Estudios Territoriales (SNET)
Santa María (Guatemala) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Santa María Central America Volcanic Arc	Eruptions continued at Santa María's Santiaguito lava-dome complex during the week of 11-17 June. INSIVUMEH reported small avalanches to the W and ash plumes drifting SW at altitudes of 2,800-3,200 m (9,000-10,500 ft) a.s.l. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Sheveluch (Russia) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	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)
Shishaldin (United States) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Shishaldin Aleutian Ridge Volcanic Arc	AVO reported that, although cloudy conditions frequently obscured webcam and satellite views of Shishaldin during 11-16 June, seismicity indicated that the low-level eruption continued. Strongly elevated surface temperatures at the summit were detected in satellite data on the morning of 16 June. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Ubinas (Peru) | 11 June-17 June 2014 | Continuing Eruptive Activity Cite this Report
Ubinas Central Andean Volcanic Arc	In a 12 June press release, IGP's Observatorio Volcanologico de Arequipa (IGP-OVA) reported that activity at Ubinas had decreased since April, however periods of intense tremor mainly associated with ash emissions continued to be detected. Ashfall affected areas around the volcano, especially within 6 km E and SSW. An IGP update on 17 June noted a small explosion at 1335 that day that sent ash 1,800 m above the crater, to an altitude of about 7,400 m (24,500 ft) a.s.l. Sources: Instituto Geofísico del Perú (IGP), Instituto Geológico Minero y Metalúrgico (INGEMMET)

Since the Weekly Volcanic Activity Report began in November 2000, there have been 22,859 individual reports over 1,335 weeks (average of 17 per week) on 351 different volcanoes.

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Criteria

The Weekly Volcanic Activity Report does not necessarily include all volcanic activity that occurred on Earth during the week. More than a dozen volcanoes globally have displayed essentially continuous eruptive activity for decades or longer, and such routine activity is typically not reported here. Submarine activity is reported when information is available. The Weekly Volcanic Activity Report summarizes volcanic activity that meets one or more of the following criteria:

- A volcano observatory raises or lowers the alert level at the volcano.
- A volcanic ash advisory has been released by a volcanic ash advisory center (VAAC) stating that an ash cloud has been produced from the volcano.
- A verifiable news report of new activity or a change in activity at the volcano has been issued.
- Observers have reported a significant change in volcanic activity. Such activity can include, but is not restricted to, pyroclastic flows, lahars, lava flows, dome collapse, or increased unrest.

Reports categorized as "Activity (New)" indicate eruptive activity that has occurred after at least 3 months of quiescence. Once a volcano is included in this section, updates will remain on that list unless the activity continues for more than 1 month without escalating, after which time updates will be listed in the "Activity (Continuing)" section. Reports are included in the "Unrest" sections (New or Continuing) if the volcano is undergoing non-eruptive activity such as seismicity or deformation that is unusually high for that volcano or is increasing. The "Other" category includes non-eruptive and non-unrest reports, such as Alert Level decreases or previous ash deposits resuspended by winds. Reports through 2025 were only divided into "New Activity/Unrest" and "Continuing Activity", which have been automatically converted to the "Activity (New)" and "Activity (Continuing)" groups, respectively, without a review of content that might change the category to "Unrest" or "Other".

It is important to note that volcanic activity meeting one or more of these criteria may occur during the week, but may not be included in the Weekly Volcanic Activity Report because we did not have the relevant information at the time.

Disclaimers

1. The Weekly Volcanic Activity Report is intended to provide timely information about global volcanism on a weekly basis. Consequently, the report is generated rapidly by summarizing volcanic reports from various sources, with little time for fact checking. The accuracy of the Weekly Volcanic Activity Report is dependent upon the quality of the volcanic activity reports we receive. Reports published in the Bulletin of the Global Volcanism Network are cover longer time periods and are more carefully reviewed, although all of the volcanoes discussed in the Weekly Volcanic Activity Report are not necessarily reported in the Bulletin. Reports are updated on the Weekly Volcanic Activity Report web page as they are received, therefore information may be included regarding events that occurred before the current report period.

2. Rapidly developing events lead to coverage that is often fragmentary. Volcanoes, their eruptions, and their plumes and associated atmospheric effects are complex phenomena that may require months to years of data analysis in order to create a comprehensive summary and interpretation of events.

3. Preliminary accounts sometimes contain exaggerations and "false alarms," and accordingly, this report may include some events ultimately found to be erroneous or misleading.

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