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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 and averaging 16 reported volcanoes, this is not a comprehensive list of all eruptions this week, but rather a summary of activity that meet criteria discussed in the "Criteria and Disclaimers" section below.

Volcanic activity reported here is preliminary and subject to change. Carefully reviewed, detailed narratives over longer time periods are published as reports of the Bulletin of the Global Volcanism Network available through volcano profile pages.

Smithsonian / USGS Weekly Volcanic Activity Report for the week of 16 October-22 October 2013
Name Country Eruption Start Date Report Status
Barren Island India 2024 Mar 15 New
Klyuchevskoy Russia New
Semeru Indonesia 2017 Jun 6 New
Sheveluch Russia 1999 Aug 15 New
Tungurahua Ecuador New
Veniaminof United States New
Whakaari/White Island New Zealand New
Aira Japan 2017 Mar 25 Continuing
Chirinkotan Russia Continuing
Dukono Indonesia 1933 Aug 13 Continuing
Karymsky Russia Continuing
Kilauea United States Continuing
Suwanosejima Japan 2004 Oct 23 Continuing
All times are local unless otherwise stated.
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,140 individual reports over 1,221 weeks (average of 16 per week) on 334 different volcanoes.

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


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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 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.



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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 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)

Report for Barren Island
Based on analysis of satellite imagery and wind data, the Darwin VAAC reported that on 17 October an ash plume from Barren Island rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted less than 30 km NW.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Klyuchevskoy
KVERT reported that a strong explosion from a new cinder cone low on Kliuchevskoi’s SW flank occurred between 2020 and 2030 on 11 October. An ash plume rose to altitudes of 6-7 km (19,700-23,000 ft) a.s.l. and drifted E.

Activity increased on 15 October, prompting KVERT to raise the Aviation Color Code to Red at 1311. Ash plumes rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. and drifted 140 km SSW. Phreatic explosions on the SW flank generated ash plumes that rose 3-4 km (9,800-13,100 ft) a.s.l. Satellite images showed an ash plume rising to an altitude of 7.5 km (24,600 ft) a.s.l. at 1419 and drifting 103 km SSW. Activity increased again; ash plumes rose to altitudes of 9 km (29,500 ft) a.s.l. at 1655 and 10 km (32,800 ft) a.s.l. afterwards. Ash plumes drifted SSW and S. At 2056 KVERT lowered the Aviation Color Code to Orange and noted that although activity had slightly decreased it still remained high. Ash plumes rose 8 km (26,200 ft) a.s.l. and drifted ENE. Phreatic explosions at the SW flank continued, as well as lava flows on the SW, W, and SE flanks.

At 0815 on 16 October satellite images detected ash plumes that rose to altitudes of 2-3 km (6,600-9,800 ft) a.s.l. and drifted 480 km NNW. Activity again increased and at 1143 KVERT issued a notice stating that the Aviation Color Code was again being raised to Red. Seismic data indicated that ash plumes rose to an altitude of 10 km (32,800 ft) a.s.l. Clouds prevented direct observations but satellite images showed ash plumes drifting NW. At 1624 satellite images showed ash plumes drifting WSW at altitudes of 7-7.5 km (23,000-24,600 ft) a.s.l. Strombolian and Vulcanian explosions continued. Activity again slightly decreased; the Aviation Color Code was lowered to Orange. Minor ashfall was reported in Mayskoe Village.

During 16-17 October the melting of the Bogdanovich glacier due to the volcanic activity caused increased water flow in the Studenaya River, which destroyed part of a road near Kozyrevsk village (about 50 km W).

On 18 October the Aviation Color Code was again raised to Red but lowered to Orange later that day. Ash plumes rose to altitudes of 8-9 km (26,200-29,500 ft) a.s.l. and drifted 20-100 km SE. Strombolian activity continued and several lava flows continued to effuse onto the W, SW, and SE flanks. At 0559 on 19 October ash plumes observed in satellite images drifted 630 km SE at altitudes of 8-9 km (26,200-29,500 ft) a.s.l. The Aviation Color Code was raised to Red. Ash plume altitudes fluctuated between 7-8 km (23,000-26,200 ft) a.s.l. later that day. A large amount of ash continued to drift 600 km SE. At 0100 on 21 October a sharp decrease in seismicity was detected and only fumarolic activity was observed. The Aviation Color Code was lowered to Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Semeru
The Darwin VAAC reported that on 18 October a pilot saw a low-level ash plume from Semeru. Ash was not identified in satellite images.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Sheveluch
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)
Report for Tungurahua
IG reported that after a 3-month lull in activity at Tungurahua, a new eruption that began on 6 October was characterized by increased seismicity, Strombolian activity that ejected incandescent blocks, and ash plumes that produced ashfall in nearby areas. Seismicity peaked on 11 October and high-level ash plumes again produced ashfall in nearby towns. The number of explosions increased on 14 October and two small pyroclastic flows traveled a few hundred meters the next day.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Report for Veniaminof
Lava effusion from Veniaminof's intracaldera cone resumed on 6 October, prompting AVO to raise the Volcano Alert Level to Watch and the Aviation Color code to Orange.

On 17 October AVO noted that seismicity had decreased during the previous week and satellite observations during periods of clear weather showed no evidence of eruptive activity. The Aviation Color Code was lowered to Yellow and the Volcano Alert Level was lowered to Advisory. Seismicity remained above background levels during 17-22 October.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Whakaari/White Island
On 21 October the GeoNet Data Centre reported that no further eruptive activity at White Island was detected after the eruption on 11 October, which ejected material over 350 m from the active vent and caused a wet surge cloud that enveloped the Main Crater. Volcanic tremor levels had decreased after the eruption and continued at variable levels. Gas flight measurements on 17 October showed that the SO2 flux was 450 tonnes per day, CO2 was 1,140 tonnes per day, and H2S was12 tonnes per day. The SO2 and H2S flux had changed very little, and CO2 had decreased from the previous measurements on 23 August. The Volcanic Alert Level was lowered to 1 and the Aviation Colour Code remained at Yellow.
Source: GeoNet
Report for Aira
JMA reported that seven explosions from Sakura-jima's Showa Crater ejected tephra as far as 1,300 m during 15-18 October. An explosion on 15 October was followed by 3-cm-sized tephra falling in areas 3.5 km SW. Based on information from JMA, the Tokyo VAAC reported that during 16-22 October explosions generated plumes that rose to altitudes of 1.2-3.7 km (4,000-12,000 ft) a.s.l. and drifted W, SW, S, and SE. On 21 October an ash plume rose vertically to an altitude of 5.5 km (18,000 ft) a.s.l.
Sources: Japan Meteorological Agency (JMA), Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Chirinkotan
SVERT reported that during 17-19 October a thermal anomaly from Chirinkotan was detected in satellite images along with gas-and-steam emissions drifting 30-60 km SE. Cloud cover prevented observations on the other days during 14-21 October. The Aviation Color Code remained at Yellow.
Source: Sakhalin Volcanic Eruption Response Team (SVERT)
Report for Dukono
Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 18-22 October ash plumes from Dukono rose to altitudes of 2.1-2.7 km (7,000-9,000 ft) a.s.l. and drifted 35-150 km NE and E.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Karymsky
KVERT reported that moderate seismic activity at Karymsky was detected during 11-18 October. Satellite images showed a thermal anomaly on the volcano on 11 and 16 October, and an ash plume drifting 18 km SE on 12 October. The thermal anomalies and short ash plume possibly indicated Strombolian and weak Vulcanian activity. The Aviation Color Code remained at Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Kilauea
During 16-22 October HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas. At Pu'u 'O'o Crater, glow emanated from spatter cones on the N and S portions of the crater floor. The 5.8-km-long Kahauale’a 2 lava flow, fed by the NE spatter cone, was active with scattered break-out flows and burned the forest N of Pu'u 'O'o. Peace Day activity, fed by lava tubes extending from Pu'u 'O'o, consisted of a few breakouts; on 21 October geologists mapped a small breakout lava flow, with two lobes, about 3 km SE of Pu'u 'O'o.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Suwanosejima
According to the Tokyo VAAC, a pilot observed an ash plume from Suwanose-jima on 21 October. Based on information from JMA the VAAC noted that a plume rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted S that same day.
Source: Tokyo Volcanic Ash Advisory Center (VAAC)