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Smithsonian / USGS Weekly Volcanic Activity Report

Weekly Volcanic Activity Map

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program. Updated by 2300 UTC every Wednesday, notices of volcanic activity posted on these pages are preliminary and subject to change as events are studied in more detail.

This is not a comprehensive list of all of Earth's volcanoes erupting during the week, but rather a summary of activity that meet criteria discussed in detail in the "Criteria and Disclaimers" section. Carefully reviewed, detailed narratives on various volcanoes are published as reports of the Bulletin of the Global Volcanism Network.

Smithsonian / USGS Weekly Volcanic Activity Report for the week of 28 October-3 November 2020
Name Location Eruption Start Date Report Status
Bezymianny Central Kamchatka (Russia) 2010 May 21 (?) New
Karymsky Eastern Kamchatka (Russia) New
Klyuchevskoy Central Kamchatka (Russia) 2020 Oct 2 New
Korovin Andreanof Islands (USA) New
Aira Kyushu (Japan) 2017 Mar 25 Continuing
Dukono Halmahera (Indonesia) 1933 Aug 13 Continuing
Ebeko Paramushir Island (Russia) 2016 Oct 20 Continuing
Fuego Guatemala 2002 Jan 4 Continuing
Katmai United States Continuing
Pacaya Guatemala 2015 Jun 7 ± 1 days Continuing
Santa Maria Guatemala 1922 Jun 22 Continuing
Semeru Eastern Java (Indonesia) 2014 Apr 1 ± 15 days Continuing
Sheveluch Central Kamchatka (Russia) 1999 Aug 15 Continuing
Sinabung Indonesia 2020 Aug 8 Continuing
Suwanosejima Ryukyu Islands (Japan) 2004 Oct 23 Continuing
Telica Nicaragua 2020 Jul 20 Continuing
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 16,325 individual reports over 1,047 weeks (average of 16 per week) on 308 different volcanoes.

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Agung Concepcion Ibu Lewotolo Parker Sotara
Ahyi Copahue Ijen Little Sitkin Pavlof Soufriere Hills
Aira Cotopaxi Iliamna Llaima Pelee Soufriere St. Vincent
Akan Cuicocha Iliwerung Loihi Peuet Sague South Sarigan Seamount
Alaid Cumbal Inielika Lokon-Empung Pinatubo Spurr
Alu-Dalafilla Dabbahu Ioto Lopevi Planchon-Peteroa St. Helens
Ambae Dempo Irazu Machin Poas Stromboli
Ambang Descabezado Grande Iya Makian Popocatepetl Sulu Range
Ambrym Dieng Volcanic Complex Izu-Torishima Makushin Puyehue-Cordon Caulle Sumbing
Anatahan Dukono Jackson Segment Maly Semyachik Rabaul Sundoro
Antillanca Volcanic Complex Ebeko Kaba Manam Raikoke Suretamatai
Antuco Ebulobo Kadovar Manda Hararo Ranakah Suwanosejima
Apoyeque Egon Kambalny Marapi Raoul Island Taal
Arenal Ekarma Kanaga Maroa Rasshua Tair, Jebel at
Asamayama Epi Kanlaon Martin Raung Takawangha
Askja Erebus Karangetang Masaya Redoubt Talang
Asosan Erta Ale Karkar Maule, Laguna del Reventador Tambora
Augustine Etna Karthala Mauna Loa Reykjanes Tanaga
Avachinsky Etorofu-Yakeyama [Grozny Group] Karymsky Mayon Rincon de la Vieja Tandikat-Singgalang
Awu Eyjafjallajokull Kasatochi McDonald Islands Rinjani Tangkoko-Duasudara
Axial Seamount Fernandina Katla Melimoyu Ritter Island Tangkuban Parahu
Azul, Cerro Fogo Katmai Merapi Rotorua Tara, Batu
Azumayama Fonualei Kavachi Midagahara Ruang Telica
Bagana Fournaise, Piton de la Kelimutu Misti, El Ruapehu Tenerife
Balbi Fourpeaked Kelut Miyakejima Ruiz, Nevado del Tengger Caldera
Bamus Fuego Kerinci Momotombo Sabancaya Three Sisters
Banda Api Fujisan Ketoi Monowai Sakar Tinakula
Bardarbunga Fukutoku-Oka-no-Ba Kharimkotan Montagu Island Salak Tofua
Barren Island Galeras Kick 'em Jenny Moyorodake [Medvezhia] San Cristobal Tokachidake
Batur Galunggung Kikai Mutnovsky San Miguel Tolbachik
Bezymianny Gamalama Kilauea Myojinsho San Vicente Toliman
Bogoslof Gamkonora Kirishimayama Nabro Sangay Tongariro
Brava Gaua Kizimen Negra, Sierra Sangeang Api Tungurahua
Bristol Island Gorely Klyuchevskoy Negro, Cerro Santa Ana Turrialba
Bulusan Great Sitkin Kolokol Group Nightingale Island Santa Maria Ubinas
Calbuco Grimsvotn Korovin Nishinoshima Sarigan Ulawun
Callaqui Guagua Pichincha Koryaksky Nisyros Sarychev Peak Unnamed
Cameroon Guallatiri Krakatau Novarupta Saunders Unnamed
Campi Flegrei del Mar di Sicilia Guntur Krummel-Garbuna-Welcker NW Rota-1 Semeru Veniaminof
Cayambe Hachijojima Kuchinoerabujima Nyamuragira Semisopochnoi Villarrica
Cereme Hakoneyama Kurikomayama Nyiragongo Seulawah Agam West Mata
Chachadake [Tiatia] Heard Kusatsu-Shiranesan Okataina Sheveluch Westdahl
Chaiten Hekla Kverkfjoll Okmok Shishaldin Whakaari/White Island
Chiginagak Helgrindur Lamington Ontakesan Simbo Witori
Chikurachki Hierro Lamongan Oraefajokull Sinabung Wolf
Chiles-Cerro Negro Hokkaido-Komagatake Langila Osorno Sinarka Yasur
Chillan, Nevados de Home Reef Lanin Pacaya Siple Zaozan [Zaosan]
Chirinkotan Hood Lascar Pagan Sirung Zavodovski
Chirpoi Huaynaputina Lateiki Palena Volcanic Group Slamet Zhupanovsky
Cleveland Hudson, Cerro Lengai, Ol Doinyo Paluweh Snaefellsjokull Zubair Group
Colima Huila, Nevado del Leroboleng Panarea Soputan
Colo Hunga Tonga-Hunga Ha'apai Lewotobi Papandayan Sorikmarapi
 News Feeds and Google Placemarks


Download Smithsonian / USGS Weekly Volcanic Activity Report Network RSS Feed

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 Geologic Summary, and a link to the volcano's page from the Global Volcanism Program. At the end of each report is a list of the sources used. Each volcano report includes a link from the volcano's name back to the more complete information in the Weekly Volcanic Activity Report on the Smithsonian website. This feature was first made available on 5 March 2008.



Download Smithsonian / USGS Weekly Volcanic Activity Report Network CAP Feed

The CAP (Common Alerting Protocol) feeds are XML files specifically formatted for disaster management. They are similar in content to the RSS feed, but contain no active links.



Download Smithsonian/USGS Weekly Volcanic Activity Report Network Link Download Smithsonian / USGS Weekly Volcanic Activity Report Network Link

A Google Earth network link for the Weekly Volcanic Activity Report can be loaded into the free Google Earth software, and in turn will load placemarks for volcanoes in the current weekly report. Placemark balloons include the volcano name, report date, report text, sources, and links back to the GVP volcano profile page and to the complete Weekly Report for that week. This feature was first made available on 1 April 2009.

 Criteria & Disclaimers

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 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.

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 monthly, and 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)

Report for Bezymianny
KVERT reported that a thermal anomaly over Bezymianny was identified in satellite images during 22-24 and 27-29 October. The N part of the lava dome was active and possibly advanced. The Aviation Color Code remained at Yellow (the second lowest level on a four-color scale).
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Karymsky
KVERT reported that during 23 and 25-26 October explosions at Karymsky produced ash plumes that rose to 5 km (16,400 ft) a.s.l. and drifted 75 km SE, NE, and NW. A thermal anomaly was identified in satellite images during 23-24, 26, and 28 October. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Klyuchevskoy
KVERT reported that Strombolian activity at Klyuchevskoy continued during 23-30 October 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)
Report for Korovin
On 28 October AVO raised the Aviation Color Code and Volcano Alert Level for Korovin to Yellow and Advisory, respectively, noting that activity was above background levels. Discrete earthquakes were detected over the previous two weeks and sulfur dioxide emissions were identified four times in satellite data on 15, 20, and 26 October. Low-level seismicity continued and no surficial activity was evident in cloudy or partly cloudy satellite images through 3 November.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Aira
JMA reported that during 26 October-2 November incandescence from Minamidake Crater (at Aira Caldera’s Sakurajima volcano) was visible nightly. An eruption at 0620 on 30 October produced a plume that rose 1 km above the crater rim. The Alert Level remained at 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
Report for Dukono
Based on satellite and wind model data and information from PVMBG the Darwin VAAC reported that during 28 October-3 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)
Report for Ebeko
Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 22-23, 25-26, and 28-29 October that sent ash plumes up to 3.1 km (10,200 ft) a.s.l. and drifted W, NW, NE, and SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Fuego
INSIVUMEH reported that 2-14 explosions were recorded per hour during 27 October-3 November at Fuego, generating ash plumes as high as 1.1 km above the crater rim that drifted 10-25 km generally S, SW, and W. Shock waves rattled buildings within 12 km of the summit. Incandescent material ejected 100-300 m high caused block avalanches in the Ceniza (SSW), Seca (W), Trinidad (S), Taniluyá (SW), El Jute, Las Lajas (SE), and Honda drainages; avalanches sometimes reached vegetated areas. Ashfall was reported during 30 October-3 November in several areas downwind including Morelia (9 km SW), Panimaché I and II (8 km SW), Finca Palo Verde, La Rochela, Santa Sofía (12 km SW), Ceylon, El Zapote (10 km S), and Sangre de Cristo (8 km WSW).
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Katmai
On 31 October AVO reported that an ash cloud, resuspended by strong winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes, drifted SE over the S part of Kodiak Island at an altitude up to 1.5 km (5,000 ft) a.s.l. The ash was originally deposited during the Novarupta eruption in 1912. The Volcano Alert Level remained at Normal and the Aviation Color Code remained at Green.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Pacaya
INSIVUMEH reported that Strombolian activity and lava effusion continued at Pacaya during 27 October-3 November. Explosions from the cone in Mackenney Crater ejected material as high as 250 m above the vent. Lava flows were 20 m and 1 km long on the NE and SW flanks, respectively. The lava flow on the NE flank was no longer active by 28 October, though parts of the SW-flank lava flow continued to advance through 3 November.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Santa Maria
INSIVUMEH reported that during 27 October-3 November lava extrusion at Santa María's Santiaguito lava-dome complex generated block-and-ash flows that descended the W, SW, S, and SE flanks. Explosions generated ash plumes that rose as high as 900 m above the summit; ash plumes drifted 1 km SW during 27-28 and 30-31 October and as far as 10 km SW during 1-2 November. The lava dome was incandescent most nights.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Semeru
PVMBG that gray-and-white ash plumes from Semeru were recorded at 0521 on 29 October, at 0747 on 30 October, at 0509 on 1 November, and at 0519 on 2 November. The ash plumes rose 200-500 m above the summit and drifted S, SW, and N. The Alert Level remained at 2 (on a scale of 1-4).
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Sheveluch
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)
Report for Sinabung
PVMBG reported that each day during 27 October-2 November avalanches descended Sinabung’s E and SE flanks as far as 1 km. Pyroclastic flows traveled 1-2.5 km down the same flanks almost daily. According to a news article, an eruption at 0752 on 29 October produced an ash plume that rose 1.5 km and caused ashfall in areas within 10 km downwind, particularly in Kabanjahe (13 km SE) and Berastagi (13 km E). An eruptive event at 2358 on 2 November generated an ash plume that rose 1.5 km and drifted E. 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.
Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), The Jakarta Post
Report for Suwanosejima
JMA reported nighttime incandescence and intermittent eruptive activity at Suwanosejima’s Ontake Crater during 23-30 October. Eight explosions were recorded; an explosion at 0204 on 24 October ejected bombs 300 m from the crater and an explosion at 1710 on 28 October produced an ash plume that rose 2 km above the crater rim. Ashfall was periodically reported in Toshima village (4 km SSW). The Alert Level remained at 2 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
Report for Telica
INETER reported that a series of three explosions at Telica began at 1910 on 29 October and ended at 2137. The events ejected rock fragments onto the flanks and produced gas-and-ash plumes that rose as high as 1 km above the crater rim and drifted W. Ashfall was reported in areas downwind including the communities of El Bosque, Jacinto Baca (15 km WSW), Filiberto Morales (15 km WSW), Carlos Huete, Linda Vista, Divino Niño (31 km W). Three explosions produced gas-and-ash plumes that rose 250-600 m above the rim during 30-31 October. A minor amount of ash fell on the flanks.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)