All times are local unless otherwise stated.

Barren Island (India) | 4 November-10 November 2020 | New Activity / Unrest Cite this Report
Barren Island Andaman Volcanic Province	The Darwin VAAC reported that an eruption at Barren Island on 5 November produced ash plumes that rose 1.5 km (5,000 ft) a.s.l. and drifted SW and WSW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Karymsky (Russia) | 4 November-10 November 2020 | New Activity / Unrest Cite this Report
Karymsky Eastern Kamchatka Volcanic Arc	KVERT reported that during 30 October and 1-2 November explosions at Karymsky produced ash plumes that rose to 6.5 km (21,300 ft) a.s.l. and drifted 60 km SW and NE. A thermal anomaly was identified in satellite images on those same days and additionally on 4 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Klyuchevskoy (Russia) | 4 November-10 November 2020 | New Activity / Unrest Cite this Report
Klyuchevskoy Eastern Kamchatka Volcanic Arc	KVERT reported that Strombolian activity at Klyuchevskoy continued during 30 October-6 November and lava advanced down the Apakhonchich drainage on the SE flank. Gas-and-steam emissions contained some ash. A large bright thermal anomaly was identified daily in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale) on 8 October. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Merapi (Indonesia) | 4 November-10 November 2020 | New Activity / Unrest Cite this Report
Merapi Sunda Volcanic Arc	PVMBG and BPPTKG raised the Alert Level for Merapi to 3 (on a scale of 1-4) on 5 November because of increasing evidence of a potential eruption. The report noted that the number of earthquakes began increasing after the 21 June explosive eruption; seismicity intensified in October and continued an upward trend. Electronic Distance Measurement (EDM) data indicated a distance shortening of 4 cm between points in the NW just after the 21 June event, and then continued showing deformation at a rate of 3 mm per day through September. The rate increased to 9 cm per day in late October and reached 11 cm per day on 4 November. The seismicity and deformation rates were higher than the rates leading up to the extrusion of lava domes on 26 April 2006, but remained lower than the 2010 eruption precursory conditions. No morphological changes were visible; the lava-dome volume was an estimated 200,000 cubic meters on 3 November based on analyses of drone images. BPPTKG alerted 12 villages in hazardous areas spread across Yogyakarta and Central Java Province, and recommended that mining in local drainages and tourism around Merapi should cease. BNPB reported that after the Alert Level was raised 607 vulnerable people (children for example) were evacuated from Krinjing, Paten, and Ngargomulyo villages in Dukun District, Magelang Regency, and emergency supplies were sent to multiple susceptible communities. Sources: Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Badan Nacional Penanggulangan Bencana (BNPB)
Saunders (United Kingdom) | 4 November-10 November 2020 | New Activity / Unrest Cite this Report
Saunders South Sandwich Volcanic Arc	Gas emissions from Michael volcano on Saunders Island were possibly visible in satellite images drifting NE on 24 October. A clear view of the crater on 6 November revealed a thermal anomaly on the crater floor. Weather clouds often obscure views of Michael. Sources: South Sandwich Islands Volcano Monitoring Blog, Sentinel Hub

Aira (Japan) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Aira Ryukyu Volcanic Arc	JMA reported that during 2-9 November incandescence from Minamidake Crater (at Aira Caldera’s Sakurajima volcano) was visible nightly. Two explosions during 1-2 November produced ash plumes that rose as high as 1.8 km above the crater rim. An explosion was recorded at 1504 on 7 November but the weather conditions prevented visual conformation. The daily sulfur dioxide emission rate was high at 2,200 tons per day on 9 November. The Alert Level remained at 3 (on a 5-level scale). Source: Japan Meteorological Agency (JMA)
Dukono (Indonesia) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Dukono Halmahera Volcanic Arc	Based on satellite and wind model data, and information from PVMBG the Darwin VAAC reported that during 4-5, 7, and 9-10 November ash plumes from Dukono rose to 2.1 km (7,000 ft) a.s.l. and drifted in multiple directions. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone. Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Ebeko (Russia) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Ebeko Kuril Volcanic Arc	Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 30 October-6 November that sent ash plumes up to 4 km (13,100 ft) a.s.l. and drifted in multiple directions. A thermal anomaly was identified in satellite images on 4 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Ibu (Indonesia) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Ibu Halmahera Volcanic Arc	The Darwin VAAC reported that during 4-5 November intermittent, discrete ash plumes from Ibu rose to 1.8 km (6,000 ft) a.s.l. and drifted S and SSW. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to stay at least 2 km away from the active crater, and 3.5 km away on the N side. Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Irazu (Costa Rica) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Irazu Central America Volcanic Arc	OVSICORI-UNA reported that Irazú’s seismic network recorded a significant landslide in the W part of the volcano on 4 November along with a lahar. A small thermal anomaly was detected in MODIS (Moderate Resolution Imaging Spectroradiometer) satellite data. Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
Laguna del Maule (Chile) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Laguna del Maule Southern Andean Volcanic Arc	SERNAGEOMIN reported that 10 low-magnitude volcano-tectonic earthquakes were detected at the Laguna del Maule Volcanic Complex during 16-31 October; seismicity was low in the region where a swarm had occurred in June. Satellite data showed no deformation, surface changes, gas emissions, or thermal anomalies. On 6 November the Alert Level was lowered to Green, the lowest level on a four-color scale. ONEMI cancelled the Yellow Alert for San Clemente, but declared a “Preventive Early Warning” ensuring continued surveillance of the area and coordination within the Civil Protection System. Sources: Servicio Nacional de Geología y Minería (SERNAGEOMIN), Oficina Nacional de Emergencia-Ministerio del Interior (ONEMI)
Popocatepetl (Mexico) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Popocatepetl Trans-Mexican Volcanic Belt	CENAPRED reported that each day during 4-10 November there were 364-504 steam-and-gas emissions from Popocatépetl, some of which contained minor amounts of ash. Gas-and-steam plumes drifted NW, SW, and SE. The Alert Level remained at Yellow, Phase Two (middle level on a three-color scale). Source: Centro Nacional de Prevencion de Desastres (CENAPRED)
Rincon de la Vieja (Costa Rica) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Rincon de la Vieja Central America Volcanic Arc	OVSICORI-UNA reported that small-to-moderate hydrothermal eruptions at Rincón de la Vieja had greater amplitudes but were more sporadic during 2-9 November. An eruptive event at 0835 on 3 November produced a plume that rose 800 m above the crater rim. Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
Semeru (Indonesia) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Semeru Sunda Volcanic Arc	PVMBG reported that gray-and-white ash plumes from Semeru rising 500 m above the summit drifted S at 0752 on 4 November and SW at 0644 on 7 November. The Alert Level remained at 2 (on a scale of 1-4). Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Sheveluch (Russia) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	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)
Sinabung (Indonesia) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Sinabung Sunda Volcanic Arc	PVMBG reported that each day during 4-9 November block avalanches descended Sinabung’s E and SE flanks generally as far as 1 km. Pyroclastic flows traveled 1.5-2.5 km down the same flanks at least during 4-5 and 7 November. An eruptive event on 4 November generated a plume to an unknown height The Alert Level remained at 3 (on a scale of 1-4), with a general exclusion zone of 3 km and extensions to 5 km in the SE sector and 4 km in the NE sector. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Suwanosejima (Japan) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Suwanosejima Ryukyu Volcanic Arc	JMA reported nighttime incandescence and intermittent eruptive activity at Suwanosejima’s Ontake Crater during 30 October-6 November. A total of 24 explosions were recorded, ejecting bombs 400 m from the crater and producing a gray ash plume that rose 1.5 km above the crater rim. The Alert Level remained at 2 (on a 5-level scale). Source: Japan Meteorological Agency (JMA)
Villarrica (Chile) | 4 November-10 November 2020 | Continuing ActivityCite this Report
Villarrica Southern Andean Volcanic Arc	SERNAGEOMIN reported that Villarrica’s webcam recorded gas-and-ash emissions that rose no higher than 350 m above the crater rim at 1442 on 5 November, with similar activity during 0757-0808 and at 1412 on 6 November. An explosive event at 0051 on 8 November ejected incandescent material and produced a plume that rose 220 m. A gas-and-ash emission at 1814 on 10 November rose 320 m and drifted SSW. The Alert Level remained at Yellow, the second lowest level on a four-color scale. ONEMI maintained an Alert Level Yellow (the middle level on a three-color scale) for the municipalities of Villarrica, Pucón (16 km N), Curarrehue, and the commune of Panguipulli, and the exclusion zone for the public of 500 m around the crater. Sources: Servicio Nacional de Geología y Minería (SERNAGEOMIN), Oficina Nacional de Emergencia-Ministerio del Interior (ONEMI)

Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,627 individual reports over 1,243 weeks (average of 17 per week) on 338 different volcanoes.

Use the dropdowns to choose the year and week for archived Weekly Reports.

 News Feeds and Google Placemarks

 Criteria & Disclaimers

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 more-or-less continuous eruptive activity for decades or longer, and such routine activity is typically not reported here. Moreover, Earth's sea-floor volcanism is seldom reported even though in theory it represents the single most prolific source of erupted material. 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.

Volcanoes are included in the "New Activity/Unrest" section of the Weekly Volcanic Activity Report if the activity occurs after at least 3 months of quiescence. Once a volcano is included in the "New Activity/Unrest" section, updates will remain in that section unless the activity continues for more than 1 month without escalating, after which time updates will be listed in the "Continuing Activity" section. Volcanoes are also included in the "New Activity/Unrest" section if the volcano is undergoing a period of relatively high unrest, or increasing unrest. This is commonly equal to Alert Level Orange on a scale of Green, Yellow, Orange, Red, where Red is the highest alert. Or alert level 3 on a scale of 1-4 or 1-5.

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 receive a report.

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. Because of our emphasis on rapid reporting on the web we have avoided diacritical marks. 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.

4. Many news agencies do not archive the articles they post on the Internet, and therefore the links to some sources may not be active. To obtain information about the cited articles that are no longer available on the Internet contact the source.

5. USGS Disclaimer Statement for this Website:

Information presented on this website is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested. We strongly recommend that USGS data be acquired directly from a USGS server and not through other sources that may change the data in some way. While USGS makes every effort to provide accurate and complete information, various data such as names, telephone numbers, etc. may change prior to updating. USGS welcomes suggestions on how to improve our home page and correct errors. USGS provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished data.

Some of the documents on this server may contain live references (or pointers) to information created and maintained by other organizations. Please note that USGS does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.

For site security purposes and to ensure that this service remains available to all users, this government computer system employs software programs to monitor network traffic to identify unauthorized attempts to upload or change information, or otherwise cause damage. Unauthorized attempts to upload information or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act. Information may also be used for authorized law enforcement investigations. (Last modified September 21, 1999.)

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
URL: https://volcano.si.edu/reports_weekly.cfm

 Acronyms and Abbreviations

a.s.l. - above sea level

AVO - Alaska Volcano Observatory

AVHRR - Advanced Very High Resolution Radiometer

CENAPRED - Centro Nacionale de Prevencion de Desastres (México)

CONRED - Coordinadora Nacional para la Reducción de Desastres

COSPEC - Correlation Spectrometer

CVGHM (formerly VSI) - Center of Volcanology and Geological Hazard Mitigation

CVO - Cascades Volcano Observatory (USGS)

GMS - Geostationary Meteorological Satellite

GOES - Geostationary Operational Environmental Satellite

GVO - Goma Volcano Observatory

GVP - Global Volcanism Program (Smithsonian Institution)

HVO - Hawaiian Volcano Observatory (USGS)

ICE - Instituto Costarricense de Electricidad (Costa Rica)

IG - Instituto Geofísico (Ecuador)

IGNS - Institute of Geological and Nuclear Sciences (New Zealand) - now GNS Science

INETER - Instituto Nicaragüense de Estudios Territoriales (Nicaragua)

INGEMMET - Instituto Geológical Minero y Metalúrgico (Peru)

INGEOMINAS - Instituto Colombiano de Geología y Minería (Colombia)

INGV-CT - Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania (Italy)

INSIVUMEH - Instituto Nacional de Sismologia, Vulcanologia, Meteorologia e Hidrologia (Guatemala)

IRD - Institut de Recherche pour le Développement (France)

JMA - Japanese Meteorological Agency

KEMSD - Kamchatkan Experimental and Methodical Seismilogical Department

KVERT - Kamchatkan Volcanic Eruption Response Team

M - magnitude

METEOSAT - Meteorological Satellite

MEVO - Mount Erebus Volcano Observatory

MODIS - Moderate Resolution Imaging Spectroradiometer

MVO - Montserrat Volcano Observatory

MWO - Meteorological Watch Office

NEIC - National Earthquake Information Center

NIED - National Research Institute for Earth Science and Disaster Prevention (Japan)

NOAA - National Oceanic and Atmospheric Administration

NOTAM - Notice to Airmen

OVDAS - Observatorio Volcanologico de los Andes del Sur (Chile)

OFDA - Office of US Foreign Disaster Assistance

ONEMI - Oficina Nacional de Emergencia - Ministerio del Interior (Chile)

OVPDLF - Observatoire Volcanologique du Piton de la Fournaise (France)

OVSICORI-UNA - Observatorio Vulcanologico y Sismologico de Costa Rica, Universidad Nacional (Costa Rica)

PHIVOLCS - Philippine Institute of Volcanology and Seismology (Philippines)

RSAM - Real-time Seismic Amplitude Measurement

RVO - Rabaul Volcano Observatory

SERNAGEOMIN - Servicio Nacional de Geologia y Mineria (Chile)

SIGMET - Significant Meteorological Information

SNET - Servicio Nacional de Estudios Territoriales (El Salvador)

SVERT - Sakhalin Volcanic Eruption Response Team (Russia)

USAID - US Agency for International Development

USGS - United States Geological Survey

UTC - Coordinated Universal Time

VAAC - Volcanic Ash Advisory Center

VAFTAD - Volcanic Ash Forecast Transport And Dispersion

VDAP - Volcano Disaster Assistance Program (USGS)

VHP - Volcano Hazards Program (USGS)

VRC - Volcano Research Center (Japan)