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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 23 February-1 March 2011
Name Location Eruption Start Date Report Status
Fuego Guatemala 2002 Jan 4 New
Lokon-Empung Sulawesi (Indonesia) New
Santa Maria Guatemala 1922 Jun 22 New
Ulawun New Britain (Papua New Guinea) New
Aira Kyushu (Japan) 2017 Mar 25 Continuing
Bulusan Luzon (Philippines) Continuing
Karymsky Eastern Kamchatka (Russia) Continuing
Kilauea Hawaiian Islands (USA) Continuing
Kirishimayama Kyushu (Japan) Continuing
Kizimen Eastern Kamchatka (Russia) Continuing
Pagan Mariana Islands (USA) Continuing
Sangay Ecuador 2019 Mar 26 Continuing
Sheveluch Central Kamchatka (Russia) 1999 Aug 15 Continuing
Soufriere Hills Montserrat Continuing
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 16,280 individual reports over 1,045 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 Fuego
INSIVUMEH reported that during 24-25 and 27-28 February explosions from Fuego produced ash plumes that rose 500-700 m above the crater and drifted W and SW. Incandescent material was ejected as high as 100 m above the crater. Avalanches traveled SW, descending the Taniluyá, Ceniza, and Trinidad drainages.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Lokon-Empung
According to news articles, a phreatic eruption from Tompaluan crater, in the saddle between the Lokon-Empung peaks, produced an ash plume that rose 400 m above the crater rim and drifted SE on 22 February.
Source: Tempo
Report for Santa Maria
INSIVUMEH reported that during 24-25 February a few explosions from Santa María's Santiaguito lava dome complex produced ash plumes that rose 800 m above Caliente dome and drifted SW. Incandescent avalanches descended the E and SW flanks.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Ulawun
RVO reported that mild activity from Ulawun that began in May 2010 continued during 1 January-28 February. The activity was characterized by brown-to-gray ash plumes that rose less than 500 m and produced fine ashfall to the SE. Sulfur dioxide plumes drifted SE on 5 and 31 January. During 23-26 February gray ash plumes occasionally drifted NE, SW, and NW.
Source: Rabaul Volcano Observatory (RVO)
Report for Aira
Based on information from JMA, the Tokyo VAAC reported that during 23 February-2 March explosions from Sakura-jima sometimes produced plumes that rose to altitudes of 1.5-2.7 km (5,000-9,000 ft) a.s.l. and drifted in multiple directions. On 23 and 26 February, pilots reported that ash plumes rose to altitudes of 3 and 4 km (10,000 and 13,000 ft) a.s.l. and drifted E and NW, respectively.
Source: Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Bulusan
During 24 February-1 March, PHIVOLCS reported that up to five daily volcanic earthquakes at Bulusan were detected by the seismic network. There were 13 lahar-related seismic signals detected during 27-28 February. Continuous heavy rain caused small lahars on the flanks and in river channels, including the Cogon and Monbon rivers to the SW. Cloud cover prevented observations of the summit area during 24-28 February.

Based on notices from the Manila airport (RPLL), the Tokyo VAAC reported that on 24 and 28 February ash was observed. However, ash was not identified in satellite imagery.
Sources: Philippine Institute of Volcanology and Seismology (PHIVOLCS), Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Karymsky
KVERT reported that moderate seismic activity was detected at Karymsky during 18-25 February. Seismic data indicated that possible ash plumes rose to an altitude of 4 km (13,100 ft) a.s.l. Satellite imagery showed a daily thermal anomaly and ash plumes that drifted 38 km NE on 22 February. The Aviation Color Code remained at Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Kilauea
During 23 February-2 March, activity continued from the summit caldera and east rift zone. At the summit caldera, the level of the circulating lava-pool surface in the deep pit within Halema'uma'u crater fluctuated between 80 and 120 m below the crater floor. Nighttime incandescence was visible from the Jaggar Museum on the NW caldera rim. A plume from the vent drifted in multiple directions and deposited ash and fresh spatter nearby. At the east rift zone, two branches of the 29 November lava flow (from a lava tube breach at 366 m elevation) produced scattered surface flows on the pali and coastal plain. In Pu'u 'O'o crater, lava periodically effused or spattered from a cone on the NE portion of the crater floor and from a vent in the E crater wall.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Kirishimayama
Based on reports from JMA, the Tokyo VAAC reported that eruptions from Kirishima's Shinmoe-dake (Shinmoe peak) on 24 and 28 February as well as 1 March produced plumes that rose to altitudes of 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted N, E, and SE.
Source: Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Kizimen
KVERT reported that during 18-21 February seismicity from Kizimen was high but variable, and many shallow volcanic earthquakes as well as volcanic tremor continued to be detected. Satellite images showed a bright thermal anomaly over the volcano daily during 18-25 February. Ash plumes drifted more than 200 km E during 21-24 February. The Aviation Color Code remained at Orange.

The Tokyo VAAC reported that on 25 February an eruption detected in satellite imagery produced a plume that rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted E. Subsequent notices stated that continuing ash emissions dissipated later that day. NASA's Earth Observatory posted a satellite image acquired on 25 February that showed steam and ash plumes drifting NE. Ash on the snow was visible NE, E, and SE of the volcano. The VAAC also noted that eruptions reported by KEMSD during 27 February-1 March produced plumes that rose to altitudes of 6.1-7.3 km (20,000-24,000 ft) a.s.l.
Sources: Kamchatkan Volcanic Eruption Response Team (KVERT), Tokyo Volcanic Ash Advisory Center (VAAC), NASA Earth Observatory
Report for Pagan
On 22 February, the Aviation Color Code and the Volcano Alert Level for Pagan were lowered to Unassigned. With the exception of a faint steam-and-gas plume observed on 24 January, no unusual activity at Pagan volcano had been detected in satellite imagery during the previous six weeks. Pagan is not monitored with ground-based geophysical instrumentation; the only source of information is satellite observations and occasional reports from island visitors.
Source: Emergency Management Office of the Commonwealth of the Mariana Islands and United States Geological Survey Volcano Hazards Program
Report for Sangay
The Washington VAAC reported that on 23 February a pilot observed ash from Sangay. No ash was confirmed in a small cloud identified in satellite imagery drifting SSE.
Source: Washington Volcanic Ash Advisory Center (VAAC)
Report for Sheveluch
KVERT reported that moderate seismic activity was detected at Shiveluch during 18-25 February. A thermal anomaly over the lava dome was observed daily in satellite imagery. Gas and steam activity was observed during 21-24 February and ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. during 22-23 February. Ash plumes observed in satellite imagery drifted more than 220 km SE at altitudes below 6 km (19,700 ft) a.s.l. during 23-24 February. The Aviation Color Code remained at Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Soufriere Hills
MVO reported that during 18-25 February activity from the Soufrière Hills lava dome was at a low level. Of 31 volcano-tectonic earthquakes detected by the seismic network, 18 occurred in a small swarm on 23 February. On 24 February a pyroclastic flow that traveled less than 1.5 km on the N flank originated from one of the highest parts of the dome, and traveled down the collapse scar formed on 11 February. The event produced an extensive pyroclastic surge and a relatively strong ash plume that rose to an altitude of about 1.5 km (5,000 ft) a.s.l. The Hazard Level remained at 3.
Source: Montserrat Volcano Observatory (MVO)