Smithsonian / USGS Weekly Volcanic Activity Report

















New Activity Highlights


 Activity for the week of 4 January-10 January 2017


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 at volcanoes that meet criteria discussed in detail in the "Criteria and Disclaimers" section. Carefully reviewed, detailed reports on various volcanoes are published monthly in the Bulletin of the Global Volcanism Network.

Name Location Activity
Bezymianny Central Kamchatka (Russia) New
Bogoslof Fox Islands (USA) New
Ebeko Paramushir Island (Russia) New
Klyuchevskoy Central Kamchatka (Russia) New
Sabancaya Peru New
San Miguel El Salvador New

Bagana Bougainville (Papua New Guinea) Ongoing
Colima Mexico Ongoing
Dukono Halmahera (Indonesia) Ongoing
Kilauea Hawaiian Islands (USA) Ongoing
Langila New Britain (Papua New Guinea) Ongoing
Masaya Nicaragua Ongoing
Nevado del Ruiz Colombia Ongoing
Nevados de Chillan Chile Ongoing
Reventador Ecuador Ongoing
Semeru Eastern Java (Indonesia) Ongoing
Sheveluch Central Kamchatka (Russia) Ongoing
Sinabung Indonesia Ongoing
Suwanosejima Ryukyu Islands (Japan) Ongoing


New Activity/Unrest


Volcano index photo  Bezymianny  | Central Kamchatka (Russia)  | 55.972°N, 160.595°E  | Elevation 2882 m

KVERT reported strong gas-and-steam emissions at Bezymianny during 31 December 2016-6 January 2017 and a daily thermal anomaly over the volcano. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Bogoslof  | Fox Islands (USA)  | 53.93°N, 168.03°W  | Elevation 150 m

AVO reported that a five-minute-long seismic signal detected by sensors on islands near Bogoslof began at 2118 on 3 January along with a series of lightning strikes identified by the World Wide Lightning Location Network. An ash cloud identified in satellite data rose as high as 10 km (33,000 ft) a.s.l. and drifted N. AVO raised the Aviation Color Code (ACC) to Red and the Volcano Alert Level (VAL) to Warning. No other indications of activity were noted for the next few days, the ACC and the VAL were lowered to Orange and Watch, respectively, on 5 January. Later that day, at 1324, seismicity again escalated, and lightning strikes indicated another significant and short-lived (five minutes) explosion. The ash plume was visible on satellite images and observed by pilots, and had risen to an estimated altitude of 10.7 km (35,000 ft) a.s.l., detached, and drifted NNW. The ACC was raised to Red and the VAL was raised to Warning, but were again lowered one level the next day. Seismic and infrasound data from neighboring islands indicated another explosive event, beginning at 2230 on 8 January. Seismic data suggested two strong pulses, during 2233-2234 and at 2256, consistent with two distinct volcanic clouds observed in satellite images. The second cloud was larger, rising to an altitude of 10.7 km (35,000 ft) a.s.l. and drifting NW. The ACC was raised to Red and the VAL was raised to Warning, but were again lowered one level to Orange and Watch, respectively, the next day.

Source: US Geological Survey Alaska Volcano Observatory (AVO)



Volcano index photo  Ebeko  | Paramushir Island (Russia)  | 50.686°N, 156.014°E  | Elevation 1103 m

KVERT reported that gas-and-steam plumes sometimes containing minor amounts of ash were emitted from Ebeko during 30 December 2016-6 January 2017. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Klyuchevskoy  | Central Kamchatka (Russia)  | 56.056°N, 160.642°E  | Elevation 4754 m

KVERT reported that during 2-6 January daily satellite images showed a thermal anomaly over Klyuchevskoy. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Sabancaya  | Peru  | 15.78°S, 71.85°W  | Elevation 5967 m

Based on webcam and satellite views, the Buenos Aires VAAC reported that during 3-10 January intermittent ash puffs from Sabancaya likely rose as high as 9.1 km (30,000 ft) a.s.l. and drifted WSW, W, N, and NE; weather clouds sometimes obscured satellite and webcam views, and the webcam was not operational during 5-6 January.

Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)



Volcano index photo  San Miguel  | El Salvador  | 13.434°N, 88.269°W  | Elevation 2130 m

Based on satellite observations, the Washington VAAC reported that on 7 January steam plumes with minor amounts of ash rose from San Miguel to an altitude of 2.6 km (8,500 ft) a.s.l. and drifted 130 km SW. Only steam-and-gas plumes were detected later that day.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Ongoing Activity


Volcano index photo  Bagana  | Bougainville (Papua New Guinea)  | 6.137°S, 155.196°E  | Elevation 1855 m

Based on analyses of satellite imagery and model data, the Darwin VAAC reported that during 7-8 January ash plumes from Bagana rose to an altitude of 2.7 km (9,000 ft) a.s.l. and drifted over 45 km NE and E.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Colima  | Mexico  | 19.514°N, 103.62°W  | Elevation 3850 m

Based on webcam and satellite images, the Mexico City MWO, and Colima Towers, the Washington VAAC reported that during 3-10 January ash plumes from Colima rose to altitudes of 4.7-6.7 km (17,000-25,000 ft) a.s.l. and drifted E, SE, S, and SW. The Unidad Estatal de Protección Civil de Colima reported that an explosion detected at 1602 on 7 January was slightly stronger than a moderate level, and that winds were drifting SSE.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Dukono  | Halmahera (Indonesia)  | 1.693°N, 127.894°E  | Elevation 1229 m

Based on analyses of satellite imagery, model data, and notices from PVMBG, the Darwin VAAC reported that during 4-5 and 7-10 January ash plumes from Dukono rose to altitudes of 1.8-2.4 km (6,000-8,000 ft) a.s.l. and drifted as far as 120 km SE, E, and NE.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Kilauea  | Hawaiian Islands (USA)  | 19.421°N, 155.287°W  | Elevation 1222 m

During 4-10 January HVO reported that the lava lake continued to rise and fall, circulate, and spatter in Kilauea’s Overlook vent; the lake level rose as high as 9 m below the Halema’uma’u floor. Webcams recorded incandescence from long-active sources within Pu'u 'O'o Crater and from a vent high on the NE flank of the cone. The 61G lava flow, originating from a vent on Pu'u 'O'o Crater's E flank, continued to enter the ocean at Kamokuna. An active branch of 61G remained active E of Pu'u 'O'o and advanced slowly E at a rate of only a few tens of meters per day.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)



Volcano index photo  Langila  | New Britain (Papua New Guinea)  | 5.525°S, 148.42°E  | Elevation 1330 m

Based on analyses of satellite images and wind data, the Darwin VAAC reported that on 2 January a weak ash plume from Langila rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted NE. A thermal anomaly was also detected via satellite. On 5 January an ash plume rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted over 45 km W.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Masaya  | Nicaragua  | 11.984°N, 86.161°W  | Elevation 635 m

Based on analysis of satellite imagery, the Washington VAAC reported that on 5 January a gas, steam, and ash plume from Masaya drifted W.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Nevado del Ruiz  | Colombia  | 4.892°N, 75.324°W  | Elevation 5279 m

Servicio Geológico Colombiano’s (SGC) Observatorio Vulcanológico y Sismológico de Manizales reported that during 3-9 January seismicity at Nevado del Ruiz continued to indicate unrest. Some of the seismic signals were associated with gas-and-ash emissions, as confirmed by webcam images and officials in the Parque Nacional Natural los Nevados. A low-energy thermal anomaly was identified by the MIROVA system on 9 January. On 6 January a gas, water vapor, and ash plume rose 2.5 km above the crater rim and drifted between SW and NE directions. A seismic event at 0745 on 8 January was associated with an ash emission which drifted SW. The Alert Level remained at III (Yellow; the second lowest level on a four-color scale).

Source: Servicio Geológico Colombiano (SGC)



Volcano index photo  Nevados de Chillan  | Chile  | 36.863°S, 71.377°W  | Elevation 3212 m

Based on a pilot observation, the Buenos Aires VAAC reported that on 6 January a dark-colored fumarolic plume rose from Nevados de Chillán to an altitude of 2.9 km (9,500 ft) a.s.l. and drifted 4.5 km E. The webcam recorded the event as a small, sporadic puff that quickly dissipated; the emission was not identified in satellite images.

Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Reventador  | Ecuador  | 0.077°S, 77.656°W  | Elevation 3562 m

During 4-10 January IG reported a high level of seismic activity including explosions, long-period earthquakes, harmonic tremor, and signals indicating emissions at Reventador. Although cloud cover often prevented visual observations, ash plumes were noted rising as high as 1 km above the crater and drifting W and NW during 6-7 January.

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)



Volcano index photo  Semeru  | Eastern Java (Indonesia)  | 8.108°S, 112.92°E  | Elevation 3676 m

Based on analysis of satellite images and information from PVMBG, the Darwin VAAC reported that on 9 January ash plumes from Semeru rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted N.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Sheveluch  | Central Kamchatka (Russia)  | 56.653°N, 161.36°E  | Elevation 3283 m

KVERT reported that during 30 December 2016-6 January 2017 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 about 100 km N and NE on 30 and 31 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Sinabung  | Indonesia  | 3.17°N, 98.392°E  | Elevation 2460 m

Based on PVMBG observations and satellite images, the Darwin VAAC reported that during 2-3 and 8-10 January ash plumes from Sinabung rose 3.6-6.4 km (12,000-21,000 ft) a.s.l. and drifted W, NE, and E. Plumes drifted as far as 55 km E ln 8 January. A thermal anomaly was detected on 9 January.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Suwanosejima  | Ryukyu Islands (Japan)  | 29.638°N, 129.714°E  | Elevation 796 m

Based on JMA notices and satellite-image analyses, the Tokyo VAAC reported that during 4-5 January ash plumes from Suwanosejima rose to altitudes of 1.2-1.8 km (4,000-6,000 ft) a.s.l. and drifted SE and W.

Source: Tokyo Volcanic Ash Advisory Center (VAAC)



Weekly Reports Archive


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Ahyi Fourpeaked Lewotolo San Miguel
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Barren Island Hunga Tonga-Hunga Ha'apai Montagu Island South Sarigan Seamount
Batur Ibu Moyorodake [Medvezhia] Spurr
Bezymianny Ijen Mutnovsky St. Helens
Bogoslof Iliamna Nabro Stromboli
Brava Iliwerung Negra, Sierra Sulu Range
Bristol Island Inielika Negro, Cerro Sumbing
Bulusan Ioto Nightingale Island Sundoro
Calbuco Iya Nishinoshima Suretamatai
Callaqui Izu-Torishima Nisyros Suwanosejima
Cameroon Jackson Segment NW Rota-1 Taal
Campi Flegrei Mar Sicilia Kaba Nyamuragira Tair, Jebel at
Cayambe Kanaga Nyiragongo Talang
Cereme Kanlaon Okataina Tambora
Chachadake [Tiatia] Karangetang Okmok Tanaga
Chaiten Karkar Ontakesan Tandikat-Singgalang
Chiginagak Karthala Pacaya Tangkoko-Duasudara
Chikurachki Karymsky Pagan Tangkubanparahu
Chiles-Cerro Negro Kasatochi Palena Volcanic Group Tara, Batu
Chillan, Nevados de Katla Paluweh Telica
Chirinkotan Katmai Panarea Tenerife
Chirpoi Kavachi Papandayan Tengger Caldera
Cleveland Kelimutu Parker Three Sisters
Colima Kelut Pavlof Tinakula
Colo Kerinci Peuet Sague Tofua
Concepcion Ketoi Pinatubo Tokachidake
Copahue Kharimkotan Planchon-Peteroa Tolbachik
Cotopaxi Kick 'em Jenny Poas Toliman
Cumbal Kikai Popocatepetl Tongariro
Dabbahu Kilauea Puyehue-Cordon Caulle Tungurahua
Dempo Kirishimayama Rabaul Turrialba
Descabezado Grande Kizimen Ranakah Ubinas
Dieng Volcanic Complex Klyuchevskoy Raoul Island Ulawun
Dukono Kolokol Group Rasshua Unknown Source
Ebeko Korovin Raung Veniaminof
Ebulobo Koryaksky Redoubt Villarrica
Egon Krakatau Reventador West Mata
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Erebus Kusatsu-Shiranesan Ritter Island Wolf
Erta Ale Kverkfjoll Rotorua Yasur
Etna Lamington Ruang Zavodovski
Etorofu-Yakeyama [Grozny Group] Lamongan Ruapehu Zhupanovsky
Eyjafjallajokull Langila Ruiz, Nevado del Zubair Group
Fernandina Lascar Sabancaya
Fogo Lengai, Ol Doinyo Sakar
Fonualei Leroboleng Salak
Fournaise, Piton de la Lewotobi San Cristobal
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 News Feeds and Google Placemarks




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. 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.




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.




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 page for that volcano and to the complete Weekly Report for that week.

 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.

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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.

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RSS and CAP Feeds

An RSS (Really Simple Syndication) feed for the Weekly Volcanic Activity Report first made available on 5 March 2008 can be utilized with the aid of various free downloadable readers. The report content of the news 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. 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. On 12 March 2009, GeoRSS tags were added so that the latitude and longitude for each volcano could be included with the feed.

At the end of each individual report is a list of the sources used. We would like to emphasize that the World Organization of Volcano Observatories (WOVO) website (http://www.wovo.org/) lists the regional volcano observatories that have the most authoritative data for many of these events.

CAP (Common Alerting Protocol) feeds are XML files specifically formatted for disaster management.


Google Earth Placemarks

A Google Earth network link for the Weekly Volcanic Activity Report was first made available on 1 April 2009. This file 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 page for that volcano and to the complete Weekly Report for that week.

 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)

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 Volcanológico 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

RSAM - Real-time Seismic Amplitude Measurement

RVO - Rabaul Volcano Observatory

SERNAGEOMIN - Servicio Nacional de Geología y Minería (Chile)

SIGMET - Significant Meteorological Information

SNET - Servicio Nacional de Estudios Territoriales (El Salvador)

SVERT - Sakhalin Volcanic Eruption Response Team (Kurile Islands)

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)