All times are local unless otherwise stated.

Colima (Mexico) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Colima Trans-Mexican Volcanic Arc	The Washington VAAC reported that on 19 November a diffuse plume from Colima was visible on a web camera drifting W. Approximately 5 hours later, the Mexico City MWO reported an ash plume to an altitude of 5.5 km (18,000 ft) a.s.l. drifting SW. Source: Washington Volcanic Ash Advisory Center (VAAC)
Fuego (Guatemala) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Fuego Central America Volcanic Arc	INSIVUMEH reported that on 15 November lava flows from Fuego traveled about 150 m SW and avalanches occurred from the lava-flow fronts. On 17 November, three out of seven explosions propelled incandescent material 100 m above the central crater. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Karymsky (Russia) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Karymsky Eastern Kamchatka Volcanic Arc	Seismic data from Karymsky was available during 10-11 November. Seismicity was elevated above background levels and the number of shallow earthquakes ranged 130-420 per day. Based on seismic data, explosions produced ash plumes that possibly reached altitudes of 2.5 km (8,200 ft) a.s.l. Plumes were visible on satellite imagery on 13 November and drifted W. The Level of Concern Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Kīlauea (United States) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Kīlauea Hawaiian-Emperor Hotspot Volcano Group	During 15-21 November, lava from Kīlauea continued to flow off of a lava delta into the ocean at the East Laeʻapuki and East Kaʻiliʻili entries. During 15-18 November, break-out flows were visible on the Pūlama pali. Incandescence was intermittently visible from the East Pond and January vents, South Wall complex, and Drainhole vent in Puʻu ʻŌʻō's crater. On 18 November, the Drainhole vent twice ejected spatter as high as 25 m above its rim. Summit inflation S of Halemaʻumaʻu caldera continued. Tremor at Puʻu ʻŌʻō remained at a typical moderate level. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Langila (Papua New Guinea) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Langila Bismarck Volcanic Arc	During 2-20 November, eruptive activity at Langila's Crater 2 consisted of continuous emissions of pale gray ash plumes that rose to an altitude of 2.3 km (7,500 ft) a.s.l. and drifted N, NW, and W. On 6 November, two explosions produced ash plumes that rose to an altitude of 3.8 km (12,500 ft) a.s.l. Explosions of incandescent lava fragments were visible during 2-6 November and roaring noises were heard on 2-6, 12-16, and 20 November. Incandescence from the crater was visible intermittently during the reporting period. Source: Rabaul Volcano Observatory (RVO)
Pacaya (Guatemala) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Pacaya Central America Volcanic Arc	INSIVUMEH reported that on 15 and 17 November lava flows from Pacaya traveled about 100-150 m N and NE. On 17 November, fumarolic emissions produced a white cloud that surrounded the S flank of MacKenney Cone. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Rabaul (Papua New Guinea) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Rabaul Bismarck Volcanic Arc	RVO reported that during 14-20 November eruptions occurred at Rabaul caldera's active Tavurvur cone. On 14 November, a large explosion produced an ash plume that rose to 2.7 km (8,900 ft) a.s.l. and drifted NW. Lava fragments fell onto the flanks and into the sea. Continuous ash emissions followed. During 15-18 and 20 November, continuous emissions of white vapor and gray ash clouds produced plumes that rose to 0.8-3.2 km (2,600-10,500 ft) a.s.l. and drifted S, E, N, and NW. On 19 November only thick white vapor clouds were emitted. Fine ashfall was reported downwind on 20 November. Source: Rabaul Volcano Observatory (RVO)
Santa María (Guatemala) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Santa María Central America Volcanic Arc	Explosions at Santa María's Santiaguito lava-dome complex produced plumes that reached an altitude of 5.3 km (17,400 ft) a.s.l. on 15 November. Ashfall was reported from areas to the N. Lava flowed down the SW, S, and SE flanks of Caliente dome. On 17 November, explosions produced white-and-gray plumes that drifted SW, where light ashfall was reported. Based on satellite imagery, the Washington VAAC reported a series of brief gas-and-ash emissions on 19 November. Plumes drifted W. Sources: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH), Washington Volcanic Ash Advisory Center (VAAC)
St. Helens (United States) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
St. Helens High Cascades Volcanic Arc	Data from deformation-monitoring instruments showed that during 15-21 November the lava dome at Mount St. Helens continued to grow. Inclement weather prohibited visual observations during most of the reporting period. On 21 November, views from an aircraft and a crater camera showed that an active spine continued to extrude. Source: US Geological Survey Cascades Volcano Observatory (CVO)
Suwanosejima (Japan) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Suwanosejima Ryukyu Volcanic Arc	Based on information from JMA, the Tokyo VAAC reported that on 17 November an eruption plume from Suwanose-jima rose straight up to an altitude of 2.1 km (7,000 ft) a.s.l. Source: Tokyo Volcanic Ash Advisory Center (VAAC)
Tungurahua (Ecuador) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Tungurahua Northern Andean Volcanic Arc	IG reported that lahars from Tungurahua traveled NW down the gorges of Vazcún and Mandur on 14 and 15 November, respectively. During 16-19 November, emissions produced gas plumes with minor ash content that reached altitudes of 5.2-5.5 km (17,100-18,000 ft) a.s.l. On 17 November, an ash plume reached an altitude greater than 10 km (32,800 ft) a.s.l. and drifted NW and NE. Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Ubinas (Peru) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Ubinas Central Andean Volcanic Arc	Based on pilot reports, the Buenos Aires VAAC reported continuous emissions from Ubinas during 15-16 November. The plumes rose to 5.5 km (18,000 ft) a.s.l. and drifted SW and SE. Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)
Ulawun (Papua New Guinea) | 15 November-21 November 2006 | Continuing Eruptive Activity Cite this Report
Ulawun Bismarck Volcanic Arc	Based on satellite imagery, the Darwin VAAC reported that during 16-17 November diffuse plumes from Ulawun drifted N and NW. An ash-and-steam plume was visible on 18 November. Source: Darwin Volcanic Ash Advisory Centre (VAAC)

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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The RSS (Really Simple Syndication) feed is identical to the Weekly Volcanic Activity Report minus some features including the header information (latitude and longitude and summit elevation), the Geological Summary, and a link to the GVP volcano profile page. At the end of each report is a list of the sources used. Each report includes a link from the volcano's name back to the more complete information on the GVP website.

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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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