All times are local unless otherwise stated.

Cleveland (United States) | 3 June-9 June 2020 | New Activity / Unrest Cite this Report
Cleveland Aleutian Ridge Volcanic Arc	AVO reported that the eruption at Cleveland on 1 June destroyed the January 2019 lava dome and ejected a large amount of material from the summit crater. Volcanic debris flows traveled about 2.9 km down the E flank and more than 2.7 km down the N flank. No significant volcanic activity was noted in often cloudy satellite views during 2-9 June; a steam plume was visible on 3 June. The Volcano Alert Level remained at Watch and the Aviation Color Code remained at Orange. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Karymsky (Russia) | 3 June-9 June 2020 | New Activity / Unrest Cite this Report
Karymsky Eastern Kamchatka Volcanic Arc	Based on satellite images KVERT reported that on 29 May, 31 May, and 2 June explosions at Karymsky generated ash plumes that rose to 4 km (13,100 ft) a.s.l. and drifted 380 km SW, SE, and E. A thermal anomaly was visible on 31 May and 2 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Aira (Japan) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Aira Ryukyu Volcanic Arc	JMA reported that during 1-8 June incandescence from Minamidake Crater (at Aira Caldera’s Sakurajima volcano) was sometimes visible at night. An explosion at 0259 on 4 June produced a plume that rose 1.5 km above the crater rim and ejected material almost 2 km away from the crater. Vibrations from the explosion were detected at the Seto Observatory, 4 km from the crater. During field surveys on 4 and 8 June deposits of tephra (up to 5 cm in diameter) were observed in areas 4-5 km E, and large blocks had fallen 3 km SW; craters created from the impact of the blocks were about 6 m in dimeter and 2 m deep. An explosion at 0130 on 5 June generated a plume that rose 3.7 km above the rim. The Alert Level remained at 3 (on a 5-level scale). Source: Japan Meteorological Agency (JMA)
Dukono (Indonesia) | 3 June-9 June 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 3-5 and 9 June ash plumes from Dukono rose to 1.8-2.4 km (6,000-8,000 ft) a.s.l. and drifted NW, SW, S, and NNE. 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) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Ebeko Kuril Volcanic Arc	Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 29-31 May and 1 June that sent ash plumes up to 4.5 km (14,800 ft) a.s.l. Ash plumes drifted E and S. A thermal anomaly over the volcano was identified in satellite images during 30 May and 1-2 June. 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) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Klyuchevskoy Eastern Kamchatka Volcanic Arc	KVERT reported that Strombolian activity at Klyuchevskoy was visible during 29 May-5 June along with a bright thermal anomaly identified in satellite images. A lava flow continued to advance down the Apakhonchich drainage on the SE flank. Gas-and-steam plumes with some ash drifted 465 km SE and E on 29 and 31 May, and 1 June. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Nevados de Chillan (Chile) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Nevados de Chillan Andean Southern Volcanic Arc	SERNAGEOMIN reported that a long-period earthquake beneath Nevados de Chillán was recorded at 0417 on 6 June. An emission associated with the earthquake rose more than 760 m above the vent and drifted NE. Pyroclastic flows descended the NW, N, E, and SE flanks. The Alert Level remained at Yellow, the second lowest level on a four-color scale, and residents were reminded not to approach the crater within 3 km. ONEMI modified their Alert Level status on 19 March, noting that an Alert Level Yellow (the middle level on a three-color scale) was in place for the communities of Pinto and Coihueco, and that the public should stay at least 2 km away from the crater. Source: Servicio Nacional de Geología y Minería (SERNAGEOMIN)
Sabancaya (Peru) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Sabancaya Andean Central Volcanic Arc	Instituto Geofísico del Perú (IGP) reported that a daily average of 18 explosions occurred at Sabancaya during 1-7 June. Gas-and-ash plumes rose as high as 1.5 km above the summit and drifted E and SE. There were three thermal anomalies identified in satellite data, originating from the lava dome in the summit crater. The Alert Level remained at Orange (the second highest level on a four-color scale) and the public were warned to stay outside of a 12-km radius. Source: Instituto Geofísico del Perú (IGP)
Sangay (Ecuador) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Sangay Andean Northern Volcanic Arc	IG reported that in the evening of 8 June, through the next morning, an eruptive event at Sangay was characterized as the collapse of one or more lava-flow fronts. Pyroclastic flows descended the Volcán River on the SE flank, and based on thermal anomalies some reached the Upano River. The Washington VAAC stated that ash plumes drifted SW. Several regional communities downwind reported ashfall including Santa Elena (170 km W), Guayas (175 km W), Los Ríos, Chimborazo, and the Morona-Santiago province. The most significant ashfall occurred in Alausí (60 km WSW). The local seismic station stopped transmitting signals on 7 June, though stations located tens of kilometers N recorded signals from the event beginning around 2000 on 8 June and lasting several hours. Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Semeru (Indonesia) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Semeru Sunda Volcanic Arc	PVMBG reported that the eruption at Semeru continued during 1-7 June, though sometimes foggy conditions prevented visual confirmation. Dense white-to-gray plumes rose 100-400 m above the summit. Incandescent material from the ends of lava flows descended 200-400 m in the Kembar drainage (on the S flank), reaching a maximum distance of 1.6 km from the crater. The Alert Level remained at 2 (on a scale of 1-4), and the public was reminded to stay outside of the general 1-km radius from the summit and 4 km on the SSE flank. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Sheveluch (Russia) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 29 May-5 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Suwanosejima (Japan) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Suwanosejima Ryukyu Volcanic Arc	JMA reported that nighttime incandescence at Suwanosejima’s Ontake Crater was occasionally visible during 29 May-5 June. An explosion at 0210 on 29 May produced an off-white plume that rose as high as 500 m above the crater rim. Large rocks were ejected 200 m above the rim. The Alert Level remained at 2 (on a 5-level scale). Source: Japan Meteorological Agency (JMA)
Whakaari/White Island (New Zealand) | 3 June-9 June 2020 | Continuing ActivityCite this Report
Whakaari/White Island Taupo Volcanic Zone	On 9 June GeoNet reported that a short-lived gas pulse and accompanying minor uplift in the vent area at Whakaari/White Island was recorded the previous week. The activity was likely linked to new magma emplaced at a shallow depth. High temperatures (around 450 degrees Celsius) at the vent area continued to be recorded. A decline in gas flux was recorded on 3 June, lower than the high levels detected on 28 May, suggesting that the increase was short-lived. Recent rainfall increased steam emissions and some water has ponded on the crater floor. The Volcanic Alert Level remained at 2 and the Aviation Color Code remained at Yellow. Source: GeoNet

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)