All times are local unless otherwise stated.

Copahue (Chile-Argentina) | 9 November-15 November 2016 | New Activity / Unrest Cite this Report
Copahue Andean Southern Volcanic Arc	Based on satellite and webcam images, the Buenos Aires VAAC reported that during 9-12 November gas, steam, and ash plumes rose from Copahue to altitudes of 3.3-3.6 km (11,000-12,000 ft) a.s.l. and drifted SE, E, and NE. Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)
Kerinci (Indonesia) | 9 November-15 November 2016 | New Activity / Unrest Cite this Report
Kerinci Sunda Volcanic Arc	Based on satellite data, the Darwin VAAC reported that on 15 November an ash plume from Kerinci rose to an altitude of 4.3 km (14,000 ft) a.s.l. and drifted 30 km NE. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Langila (Papua New Guinea) | 9 November-15 November 2016 | New Activity / Unrest Cite this Report
Langila Bismarck Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 13 November an ash plume from Langila rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 55 km N. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Sabancaya (Peru) | 9 November-15 November 2016 | New Activity / Unrest Cite this Report
Sabancaya Andean Central Volcanic Arc	A Technical and Scientific Committee for volcanic risk management of the Arequipa region is comprised of five groups including IGP's Observatorio Vulcanológico del Sur (OVS) and INGEMMET's Observatorio Vulcanológico (OVI) and have been monitoring Sabancaya since 2013. The committee reported that new ash-bearing explosions began on 6 November. The explosions, detected at 2126, 2127, and 2149, produced ash plumes that rose 1.5 km above the crater rim and drifted E. The frequency of hybrid earthquakes increased noticeably in early October and in the hours prior to the 6 November explosions. Volcanic gas emissions had also increased significantly, with values as high as 7,173 tons/day on 23 October. The MIROVA system had detected a thermal anomaly at the volcano on 2 November. During 6-13 November ash-and-gas emissions from explosions and from periods in between explosions rose as high as 3 km above the crater. An event at 1320 on 8 November generated a significant ash plume that rose 2.4 km above the crater rim with ash dispersing within a 5-km radius. During 9-10 November ash plumes rose as high as 2 km and drifted 30-35 km SE, E, and NE, producing ashfall in the villages of Valle del Colca to the NE. On 11 November an explosion generated an ash plume that rose 3 km and drifted 40 km E and NE. An ash plume from an explosion the next day rose 2 km and drifted 30 km NE. Sources: Instituto Geofísico del Perú (IGP), Instituto Geológico Minero y Metalúrgico (INGEMMET)
Ubinas (Peru) | 9 November-15 November 2016 | New Activity / Unrest Cite this Report
Ubinas Andean Central Volcanic Arc	The Comité Científico de Monitoreo Permanente del volcán Ubinas, made up of scientists from IGP's Observatorio Vulcanológico del Sur (OVS) and INGEMMET's Observatorio Vulcanológico (OVI), reported that on 8 November three explosions at Ubinas (at 2126, 2127, and 2149) generated an ash plume that rose 1.5 km above the crater rim and drifted E. Source: Instituto Geofísico del Perú (IGP)

Dukono (Indonesia) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Dukono Halmahera Volcanic Arc	Based on analyses of satellite imagery and model data, the Darwin VAAC reported that during 9-15 November ash plumes from Dukono rose to altitudes of 2.1-3.7 km (7,000-12,000 ft) a.s.l. and drifted N, NE, E, and SE. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Fuego (Guatemala) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Fuego Central America Volcanic Arc	INSIVUMEH reported that during 11-15 November explosions at Fuego generated ash plumes that rose as high as 1.3 km and drifted more than 15 km W and SW. Some explosions produced shock waves detected within a 10 km radius and also ejected incandescent material as high as 300 m. Minor avalanches were confined to the crater. Ashfall was reported in Morelia (9 km SW), Santa Sofía (12 km SW), Sangre de Cristo (8 km WSW), and Panimaché I and II (8 km SW). Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Kilauea (United States) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Kilauea Hawaiian-Emperor Hotspot Volcano Group	During 9-15 November HVO reported that the lava lake continued to rise and fall, circulate, and spatter in Kilauea’s Overlook vent; the lake level rose almost to the rim (Halema’uma’u floor) during 9-10 November. Webcams recorded incandescence from long-active sources within Pu'u 'O'o Crater. The 61G lava flow, originating from a vent on Pu'u 'O'o Crater's E flank, continued to enter the ocean near Kamokuna at the easternmost lava delta. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Klyuchevskoy (Russia) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Klyuchevskoy Eastern Kamchatka Volcanic Arc	On 8 November, KVERT reported that activity at Klyuchevskoy had decreased significantly and therefore the Aviation Color Code was lowered to Yellow. Lava effusion onto the flanks was last noted on 3 November; the next day the thermal anomaly was reduced. Ash plumes were last detected in satellite images during 3-4 November. Strombolian activity in the crater was also observed on those days. Strong gas-and-steam emissions continued. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Reventador (Ecuador) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Reventador Andean Northern Volcanic Arc	During 9-15 November IG reported a high level of seismic activity including explosions, long-period earthquakes, harmonic tremor, and signals indicating emissions at Reventador; cloud cover sometimes prevented visual observations. Almost daily incandescent blocks were observed rolling as far as 1.6 km down the E, SE, and S flanks. Gas, water vapor, and ash plumes rose as high as 2 km and drifted W and NW. Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Santa Maria (Guatemala) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Santa Maria Central America Volcanic Arc	On 9 November a 15-m-wide, 1-m-deep lahar triggered by rainfall descended the Cabello de Ángel drainage, a tributary of the Nimá I river drainage on Santa María’s S flank, carrying tree trunks and blocks up to 1 m in diameter. The lahar had a minor sulfur odor. During 12-15 November explosions from the Santiaguito lava-dome complex generated ash plumes that rose to 800 m above the complex and drifted SW. Ashfall was reported in areas downwind, including Monte Claro, San José, and la Quinta. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Sheveluch (Russia) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	KVERT reported that during 4-11 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions with ash plumes as high as 6 km (19,700 ft) a.s.l., and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. According to video and satellite data, ash plumes drifted as far as 143 km E during 3-4 November. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Sinabung (Indonesia) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Sinabung Sunda Volcanic Arc	Based on satellite images, wind data, and ground reports from PVMBG, the Darwin VAAC reported that during 11 and 13-14 November ash plumes from Sinabung rose to altitudes of 3.7-5.8 km (12,000-19,000 ft) a.s.l. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Suwanosejima (Japan) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Suwanosejima Ryukyu Volcanic Arc	Based on JMA notices and satellite-image analyses, the Tokyo VAAC reported that during 5-6 October explosions at Suwanosejima generated ash plumes that rose to altitudes of 1.2-2.1 km (4,000-7,000 ft) a.s.l. and drifted SE, S, and W. Source: Japan Meteorological Agency (JMA)
Tengger Caldera (Indonesia) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Tengger Caldera Sunda Volcanic Arc	Based on analyses of satellite and webcam images and information from PVMBG, the Darwin VAAC reported that during 10-12 November ash plumes from Tengger Caldera’s Bromo cone rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted NW, E, and SE. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Turrialba (Costa Rica) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Turrialba Central America Volcanic Arc	OVSICORI-UNA reported that during 9-13 November ash plumes observed almost daily rose as high as 1 km above Turrialba’s active vent. The plumes drifted in variable directions, particularly to the SW, W, and NE, and ashfall was reported in many areas of the Valle Central. Tremor decreased on 13 November; ash emissions were not observed on 14 November. Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
Yasur (Vanuatu) | 9 November-15 November 2016 | Continuing ActivityCite this Report
Yasur Vanuatu Volcanic Arc	On 11 November the Vanuatu Geohazards Observatory stated that the Alert Level for Yasur remained at 2 (on a scale of 0-4) and that explosions continued to be intense. VGO reminded residents and tourists that hazardous areas were near and around the volcanic crater, within a 395-m-radius permanent exclusion zone, and that volcanic ash and gas could reach areas impacted by trade winds. Source: Vanuatu Meteorology and Geohazards Department (VMGD)

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)