All times are local unless otherwise stated.

Bezymianny (Russia) | 15 March-21 March 2017 | New Activity / Unrest Cite this Report
Bezymianny Eastern Kamchatka Volcanic Arc	KVERT reported that lava continued to advance down Bezymianny's NW flank during 10-17 March, and gas-and-steam plumes rose from the crater. A thermal anomaly was visible each day in satellite images. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Chirinkotan (Russia) | 15 March-21 March 2017 | New Activity / Unrest Cite this Report
Chirinkotan Kuril Volcanic Arc	Based on satellite images, SVERT reported that on 21 March an ash plume from Chirinkotan rose to an altitude of 6 km (20,000 ft) a.s.l. and drifted 15 km E. The Aviation Color Code was raised to Yellow (the second lowest on a four-color scale). Source: Sakhalin Volcanic Eruption Response Team (SVERT)
Etna (Italy) | 15 March-21 March 2017 | New Activity / Unrest Cite this Report
Etna Sicily Volcanic Province	INGV reported that during the morning of 15 March lava began to flow down the S flank of Etna's Southeast Crater (SEC) - New Southeast Crater (NSEC) cone complex. Activity rapidly intensified at 0800, and by 1000 near-constant Strombolian explosions were generating ash plumes. The lava flow reached the base of the cone and traveled S. By late afternoon the lava was advancing on top of lava flows from the previous eruption. The intensity of the Strombolian activity reached a peak around 1840-1845, and by the evening both the eruptive activity and seismicity gradually diminished. Just before midnight a new lava flow began to effuse from a vent on the S flank of the cone. On 16 March at 1243 a phreato-magmatic explosion occurred at the front of a lava flow where it contacted an area covered with snow. An INGV-Osservatorio Etneo volcanologist was injured in the explosion, suffering minor bruises. A news article noted that about 10 people were injured during the event. Source: Sezione di Catania - Osservatorio Etneo (INGV)
Manam (Papua New Guinea) | 15 March-21 March 2017 | New Activity / Unrest Cite this Report
Manam Bismarck Volcanic Arc	Based on analyses of satellite imagery and model data, the Darwin VAAC reported that on 21 March weak ash emissions from Manam rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted NE and E. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Nevados de Chillan (Chile) | 15 March-21 March 2017 | New Activity / Unrest Cite this Report
Nevados de Chillan Southern Andean Volcanic Arc	Based on satellite and webcam views, the Buenos Aires VAAC reported that during 15-17 March gas-and-ash plumes from Nevados de Chillán rose to altitudes of 4-5.5 km (13,000-18,000 ft) a.s.l. and sometimes drifted NE and SW. Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)

Bagana (Papua New Guinea) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Bagana Solomon Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 17 March an ash plume from Bagana rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted W. The next day an ash plume rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted almost 85 km W. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Bogoslof (United States) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Bogoslof Aleutian Ridge Volcanic Arc	AVO reported that no significant volcanic activity at Bogoslof was detected in seismic or infrasound data during 15-21 March, and satellite views were either obscured by clouds or showed nothing noteworthy. Slightly elevated surface temperatures were identified in satellite images during 16-17 and 20-21 March. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Warning. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Colima (Mexico) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Colima Trans-Mexican Volcanic Arc	Based on Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima observations, the Unidad Estatal de Protección Civil de Colima reported that during 10-16 March there were three low-intensity explosions at Colima. A slight decrease of sulfur dioxide was detected. During an overflight scientists observed gas emissions from small explosion craters on the floor of the main crater; there was no evidence of a new lava dome. The report noted that the public should not enter the 6-km-radius exclusion zone. Source: Unidad Estatal de Protección Civil de Colima
Dukono (Indonesia) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Dukono Halmahera Volcanic Arc	Based on analyses of satellite imagery, wind model data, and notices from PVMBG, the Darwin VAAC reported that during 15-21 March ash plumes from Dukono rose to altitudes of 2.1-2.7 km (7,000-9,000 ft) a.s.l. and drifted in multiple directions. Ash plumes during 19-21 March drifted 150-280 km SW, W, and NW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Ebeko (Russia) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Ebeko Kuril Volcanic Arc	KVERT reported that on 10 March several explosions at Ebeko, observed by residents of Severo-Kurilsk (Paramushir Island) about 7 km E, generated plumes that rose to an altitude of 1.6 km (5,200 ft) a.s.l. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Fuego (Guatemala) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Fuego Central America Volcanic Arc	INSIVUMEH reported that during 16-21 March explosions at Fuego generated sometimes dense ash plumes that rose as high as 950 m above the crater rim and drifted 10-12 km W, SW, and S. Ashfall was reported in Panimaché I and II (8 km SW), Morelia (9 km SW), Santa Sofía (12 km SW), and El Porvenir. Shock waves and rumbling from the explosions were sometimes heard. Incandescent material was ejected as high as 200 m above the crater rim. During 18-19 March incandescent material was ejected 200 m away from the crater. In a special report dated 21 March INSIVUMEH noted that lahars had begun descending the Santa Teresa and Las Lajas drainages at 1623 based on seismic data; it had been raining for a few days. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Kilauea (United States) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Kilauea Hawaiian-Emperor Hotspot Volcano Group	During 15-21 March HVO reported that the lava lake continued to rise, fall, and spatter in Kilauea’s Overlook vent. Webcams recorded incandescence from long-active sources within Pu'u 'O'o Crater, from a vent high on the NE flank of the cone, and from a small lava pond in a pit on the W side of the crater. The 61G lava flow, originating from a vent on Pu'u 'O'o Crater's E flank, continued to enter the ocean at Kamokuna; the lava stream was 1-2 m wide on 16 March, and plunged into the ocean from the end of the lava tube, about 20 m above the water. Surface lava flows were active above the pali. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Klyuchevskoy (Russia) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Klyuchevskoy Eastern Kamchatka Volcanic Arc	On 16 March KVERT reported that although gas-and-steam emissions continued to rise from Klyuchevskoy's crater, and a weak thermal anomaly was identified in satellite images, no explosions had been detected since 8 March. The Aviation Color Code was lowered to Yellow (the second lowest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Nevado del Ruiz (Colombia) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Nevado del Ruiz Northern Andean Volcanic Arc	Based on satellite and webcam images, the Washington VAAC reported that on 17 and 20 March ash plumes from Nevado del Ruiz rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted NW and SW. Source: Washington Volcanic Ash Advisory Center (VAAC)
Pacaya (Guatemala) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Pacaya Central America Volcanic Arc	INSIVUMEH reported small Strombolian explosions at Pacaya’s Mackenney during 16-20 March. Lava traveled 30 m W, and sometimes crater incandescence was visible at night and at dawn. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Sabancaya (Peru) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Sabancaya Central Andean Volcanic Arc	Based on webcam images, satellite views, and seismic data the Buenos Aires VAAC reported sporadic gas-and-ash puffs from Sabancaya during 14-15, 17-19, and 21 March, sometimes rising as high as 8.2 km (27,000 ft) a.s.l. Weather clouds often hindered observations of the volcano. Observatorio Vulcanológico del Sur del IGP (OVS-IGP) and Observatorio Vulcanológico del INGEMMET (OVI) reported that at 0802 on 21 March an ash plume rose 2 km and drifted more than 30 km SSE. Sources: Instituto Geofísico del Perú (IGP), Instituto Geológico Minero y Metalúrgico (INGEMMET), Buenos Aires Volcanic Ash Advisory Center (VAAC)
Sheveluch (Russia) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	KVERT reported that during 10-17 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 100 km NW on 9 and 14 March. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Sinabung (Indonesia) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Sinabung Sunda Volcanic Arc	Based on PVMBG observations, satellite data, and wind data, the Darwin VAAC reported that during 15-18 and 21 March ash plumes from Sinabung rose to altitudes of 3-5.5 km (10,000-18,000 ft) a.s.l. and drifted E, N, W, and WSW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Turrialba (Costa Rica) | 15 March-21 March 2017 | Continuing ActivityCite this Report
Turrialba Central America Volcanic Arc	OVSICORI-UNA reported that during 20-21 March weak gas emissions at Turrialba contained sporadic, small amounts of ash, and rose no higher than 100 m above the crater rim and drifted SW. Volcanic tremor had medium and variable amplitude, and a few low-frequency earthquakes were recorded. Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)

Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 21,073 individual reports over 1,262 weeks (average of 17 per week) on 339 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)