All times are local unless otherwise stated.

Kuchinoerabujima (Japan) | 5 February-11 February 2020 | New Activity / Unrest Cite this Report
Kuchinoerabujima Ryukyu Volcanic Arc	JMA reported that after the 3 February eruption at Kuchinoerabujima’s Shindake Crater the number of volcanic earthquakes decreased, and very small eruptive events occurred intermittently though 5 February and on 9 February. A large amount of ashfall (including lapilli up to 2 cm in diameter) was confirmed on the SE flank during field observations on 3 and 6 February. Thermal image observations revealed 5-km-long pyroclastic flow deposits on the SW flank. The number of volcanic earthquakes began increasing on 9 February and continued to be elevated the next day. A large-amplitude volcanic tremor event was accompanied by fluctuating tilt at 1318 on 11 February. The Alert Level remained at 3 (the middle level on a scale of 1-5). Source: Japan Meteorological Agency (JMA)
Piton de la Fournaise (France) | 5 February-11 February 2020 | New Activity / Unrest Cite this Report
Piton de la Fournaise Reunion Hotspot Volcano Group	OVPF reported that a seismic crisis at Piton de la Fournaise began at 1027 on 10 February, accompanied by rapid deformation. Volcanic tremor began just 23 minutes later, at 1050, heralding the start of a new eruption. During an overflight conducted during 1300-1330 in partly cloudy weather, observers noted that several fissures had opened on the E flank of Dolomieu Crater, between the crater rim and 2,000 m elevation. The fissures all were at least 1 km long and produced lava fountains that were no higher than 10 m. Lava flows had traveled E to 1,700 m elevation by 1315. In the evening mapping of the lava flows based on satellite data revealed a larger flow field that what was visually observed during the overflight hours before. Lava flows spanned from the E to the S, with the farthest flow traveling E to 1,400 m elevation. The data showed that the fissures at the highest elevation had opened in the same area as those from the 18 February and 11 June 2019 eruptions. Source: Observatoire Volcanologique du Piton de la Fournaise (OVPF)
Reykjanes (Iceland) | 5 February-11 February 2020 | New Activity / Unrest Cite this Report
Reykjanes Iceland Neovolcanic Rift Zone	On 7 February IMO reported that data collected during the previous week indicated that a magma body was located 3-5 km beneath Reykjanes. Earthquake activity had decreased during the previous two days, though inflation was ongoing, reaching 5 cm. The Aviation Code remained at Yellow. Source: Icelandic Meteorological Office (IMO)
Semeru (Indonesia) | 5 February-11 February 2020 | New Activity / Unrest Cite this Report
Semeru Sunda Volcanic Arc	The Darwin VAAC reported that on 5 February an ash plume from Semeru rose to an altitude of 4.3 km (14,000 ft) a.s.l., or 400 m above the crater rim, and drifted SE based on satellite images and weather models. PVMBG noted that on 7 February a gray ash plume rose 400 m and drifted S. The Alert Level remained at 2 (on a scale of 1-4). Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Darwin Volcanic Ash Advisory Centre (VAAC)
Taal (Philippines) | 5 February-11 February 2020 | New Activity / Unrest Cite this Report
Taal Taiwan-Luzon Volcanic Arc	PHIVOLCS reported that whitish steam plumes rose as high as 300 m above Taal’s main vent during 5-11 February and drifted SW. Sulfur dioxide emissions ranged from values below detectable limits to a high of 116 tonnes per day (on 8 February). Weak steaming (plumes 10-20 m high) from ground cracks was visible along the Daang Kastila trail which connects the N part of Volcano Island to the N part of the main crater. According to the Disaster Response Operations Monitoring and Information Center (DROMIC) there were a total of 17,088 people in 110 evacuation centers, and an additional 211,729 people were staying at other locations as of 10 February. The Alert Level remained at 3 (on a scale of 0-5) and PHIVOLCS recommended no entry onto Volcano Island and Taal Lake, nor into towns W of the island within a 7-km radius. Sources: Philippine Institute of Volcanology and Seismology (PHIVOLCS), Disaster Response Operations Monitoring and Information Center (DROMIC)

Aira (Japan) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Aira Ryukyu Volcanic Arc	JMA reported that during 3-7 February there were 16 explosions and 21 non-explosive eruptive events detected by the Minamidake Crater (at Aira Caldera’s Sakurajima volcano) seismic network. Ash plumes rose as high as 2.2 km above the crater rim and material was ejected 1,000-1,300 m away from the crater. Crater incandescence was visible at night. An explosion at 0126 on 10 February produced an ash plume that rose 1.4 km and ejected material as far as 1.8 km away from the crater. The Alert Level remained at 3 (on a 5-level scale). Source: Japan Meteorological Agency (JMA)
Dukono (Indonesia) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Dukono Halmahera Volcanic Arc	Based on satellite and wind model data, the Darwin VAAC reported that during 5-11 February ash plumes from Dukono rose to 2.1-2.4 km (7,000-8,000 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: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Darwin Volcanic Ash Advisory Centre (VAAC)
Ebeko (Russia) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Ebeko Kuril Volcanic Arc	Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 1-7 February that sent ash plumes up to 3 km (10,000 ft) a.s.l.; ash plumes drifted E and S. 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) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Ibu Halmahera Volcanic Arc	The Darwin VAAC reported that during 5-6 February multiple discrete ash plumes from Ibu, identified in satellite images, rose to 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted SE and E. An ongoing thermal anomaly was also visible. 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: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Darwin Volcanic Ash Advisory Centre (VAAC)
Kadovar (Papua New Guinea) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Kadovar Bismarck Volcanic Arc	RVO reported that the eruption at Kadovar continued during 1 January-7 February with frequent (hours to days) Vulcanian explosions from Main Vent at the summit. The explosions ejected rocks and ash plumes that rose 300-400 m above the vent and drifted NE and E. Residents on Blup Blup (15 km N) reported rumbling and nighttime summit incandescence. Volcanic plumes were sometimes observable in Wewak (105 km W). The Darwin VAAC stated that on 6 February an ash plume rose to 2.1 km (7,000 ft) a.s.l. and drifted SE. Sources: Rabaul Volcano Observatory (RVO), Darwin Volcanic Ash Advisory Centre (VAAC)
Klyuchevskoy (Russia) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Klyuchevskoy Eastern Kamchatka Volcanic Arc	KVERT reported that Strombolian activity at Klyuchevskoy was visible during 31 January-7 February, and a thermal anomaly was identified those same days in satellite images. Vulcanian activity was recorded on 31 January and 4 February; explosions generated ash plumes that rose to 5.5 km (18,000 ft) a.s.l. and drifted 145 km E. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Krakatau (Indonesia) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Krakatau Sunda Volcanic Arc	PVMBG reported that during 6-10 February a series of eruptive events at Anak Krakatau generated ash plumes that rose as high as 1 km above the summit. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km-radius hazard zone from the crater. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Popocatepetl (Mexico) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Popocatepetl Trans-Mexican Volcanic Belt	CENAPRED reported that each day during 5-11 February there were 57-154 steam-and-gas emissions from Popocatépetl, some of which contained minor amounts of ash. An explosion at 1754 on 5 February produced an ash plume that rose 1.5 km above the crater rim and drifted NNE. A minor explosion at 0029 on 9 February ejected incandescent material onto the flanks. An explosion at 0233 on 10 February produced an ash plume that rose 1 km and drifted NE, and ejected incandescent material as far as 500 m down the flanks. The Alert Level remained at Yellow, Phase Two (middle level on a three-color scale). Source: Centro Nacional de Prevencion de Desastres (CENAPRED)
Sheveluch (Russia) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 1-7 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Shishaldin (United States) | 5 February-11 February 2020 | Continuing ActivityCite this Report
Shishaldin Aleutian Ridge Volcanic Arc	On 6 February AVO reported that seismicity at Shishaldin decreased during the previous week (though remained slightly above background levels), along with the surface temperatures at the summit identified in satellite data. AVO lowered the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory since the eruption appeared to have paused or ceased. Source: US Geological Survey Alaska Volcano Observatory (AVO)

Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,322 individual reports over 1,229 weeks (average of 17 per week) on 336 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)