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Smithsonian / USGS Weekly Volcanic Activity Report

You are currently viewing Archived reports for the week of 18 December-24 December 2019.


















 Activity for the week of 18 December-24 December 2019

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
Semisopochnoi United States New
White Island North Island (New Zealand) New

Aira Kyushu (Japan) Ongoing
Dukono Halmahera (Indonesia) Ongoing
Ebeko Paramushir Island (Russia) Ongoing
Fuego Guatemala Ongoing
Karangetang Siau Island (Indonesia) Ongoing
Kirishimayama Kyushu (Japan) Ongoing
Klyuchevskoy Central Kamchatka (Russia) Ongoing
Sangeang Api Indonesia Ongoing
Sheveluch Central Kamchatka (Russia) Ongoing
Shishaldin Fox Islands (USA) Ongoing


New Activity / Unrest


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

Activity at Bezymianny remained elevated during 13-20 December; nighttime crater incandescence, strong fumarolic emissions, and a lava flow on the W flank of the lava dome were visible. The temperature of a thermal anomaly had continued to increase. 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  Semisopochnoi  | United States  | 51.93°N, 179.58°E  | Elevation 1221 m

AVO reported that ash plumes below 1.5 km (5,000 ft) a.s.l. from Semisopochnoi were identified in satellite images on 14 and 17 December; ash plumes on 17 December drifted about 15 km SE. During 17-20 December seismicity was characterized by tremor bursts and small explosions, though cloudy weather conditions prevented visual confirmation. Elevated seismicity was recorded on 21 December. Nothing significant was detected during 22-24 December. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.

Source: US Geological Survey Alaska Volcano Observatory (AVO)



Volcano index photo  White Island  | North Island (New Zealand)  | 37.52°S, 177.18°E  | Elevation 294 m

GeoNet reported that during 18-23 December the level of volcanic tremor at White Island remained low and gas-and-steam plumes were strongly emitted from the new vent area. The highest-temperature emissions were more than 650 degrees Celsius measured during an overflight on 19 December. Volcanologists also measured about 1,300 tons/day of sulfur dioxide, slightly lower than 12 December measurements of about 1,730 tons/day. A small part of the SW slope of the 1914 landslide (inside the crater rim and opposite the former viewing area) had collapsed into the crater lake and active vent area, leaving a scarp 12 m high. The area had been unstable prior to the 9 December eruption. According to the New Zealand Police the death toll from the 9 December eruption had reached 17. Two people remained missing; the search was suspended on 24 December.

Sources: GeoNet, New Zealand Police



Ongoing Activity


Volcano index photo  Aira  | Kyushu (Japan)  | 31.593°N, 130.657°E  | Elevation 1117 m

JMA reported that incandescence from Minamidake Crater (at Aira Caldera’s Sakurajima volcano) was visible at night during 16-23 December. There were 16 explosions and nine non-explosive eruptive events detected by the seismic network. Ash plumes rose as high as 2.5 km above the crater rim and material was ejected 0.5-1.3 km away from the crater. The Alert Level remained at 3 (on a 5-level scale).

Source: Japan Meteorological Agency (JMA)



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

Based on satellite and wind model data, and information from PVMBG, the Darwin VAAC reported that during 18-24 December ash plumes from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted E, ESE, and SE. 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)



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

Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 15-17 December that sent ash plumes up to 3 km (10,000 ft) a.s.l. Ash plumes drifted E, causing ashfall in Severo-Kurilsk during 16-17 December. 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  Fuego  | Guatemala  | 14.473°N, 90.88°W  | Elevation 3763 m

INSIVUMEH reported that there were 8-18 explosions per hour recorded at Fuego during 18-24 December, generating ash plumes that rose as high as 1 km above the crater rim and drifted 10-205 km S, SW, and W. Ashfall was reported in several areas downwind including Santa Sofía (12 km SW), Morelia (9 km SW), Panimaché I and II (8 km SW), Finca Palo Verde, San Pedro Yepocapa (8 km NW), Sangre de Cristo (8 km WSW), and El Porvenir (8 km ENE). Explosions sometimes produced shock waves that rattled houses in nearby communities. Incandescent material was ejected 100-300 m high and caused avalanches of material that occasionally traveled long distances (reaching vegetated areas) down the Seca (W), Taniluyá (SW), Ceniza (SSW), Trinidad (S), and Las Lajas (SE) ravines. Incandescent material traveled about 300 m down the Seca drainage during 23-24 December.

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)



Volcano index photo  Karangetang  | Siau Island (Indonesia)  | 2.781°N, 125.407°E  | Elevation 1797 m

PVMBG reported that during 16-22 December lava continued to effuse from Karangetang’s Main Crater (S), traveling as far as 1.8 km down the Nanitu, Pangi, and Sense drainages on the SW and W flanks. Sometimes dense white plumes rose to 150 m above the summit. Incandescence from both summit craters was visible at night. The Alert Level remained at 2 (on a scale of 1-4).

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)



Volcano index photo  Kirishimayama  | Kyushu (Japan)  | 31.934°N, 130.862°E  | Elevation 1700 m

JMA reported that the increase in the number of volcanic earthquakes with hypocenters just below Shinmoedake (Shinmoe peak), a stratovolcano of the Kirishimayama volcano group, only lasted during 17-18 November. The number of volcanic earthquakes was low after that and no other data indicated increased activity. Scientists noted no changes to geothermal areas on the crater floor and below cracks on the W flank during a field survey on 12 December. The Alert Level was lowered to 1 (on a scale of 1-5) on 20 December.

Source: Japan Meteorological Agency (JMA)



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

KVERT reported that a weak thermal anomaly over Klyuchevskoy was identified in satellite images during 12-15 and 17 December, and Strombolian activity was visible during 13-15 and 17 December. Gas-and-steam plumes rose to 5-5.5 km (16,400-18,000 ft) a.s.l. and drifted 45 km NE on 14 and 19 December. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Sangeang Api  | Indonesia  | 8.2°S, 119.07°E  | Elevation 1912 m

The Darwin VAAC reported that during 18-19 December discrete minor ash emissions from Sangeang Api rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted W. The Alert Level remained at 2 (on a scale of 1-4).

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 a thermal anomaly over Sheveluch was identified in satellite images during 13-20 December. 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  Shishaldin  | Fox Islands (USA)  | 54.756°N, 163.97°W  | Elevation 2857 m

AVO reported that the eruption at Shishaldin continued during 18-24 December. Elevated surface temperatures were identified in satellite images, though clouds sometimes prevented views. Seismicity remained elevated and was characterized by ongoing tremor and periodic weak explosions. Satellite imagery indicated that the active summit cone had grown after collapsing the week before. Minor ash emissions drifted S on 19 December and E at 4.6 km (15,000 ft) a.s.l. on 21 December. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.

Source: US Geological Survey Alaska Volcano Observatory (AVO)



Weekly Reports Archive

Search by Volcano
Agung Fuego Little Sitkin Salak
Ahyi Fujisan Llaima San Cristobal
Aira Fukutoku-Oka-no-Ba Loihi San Miguel
Akan Galeras Lokon-Empung San Vicente
Alaid Galunggung Lopevi Sangay
Alu-Dalafilla Gamalama Machin Sangeang Api
Ambae Gamkonora Makian Santa Ana
Ambang Gaua Makushin Santa Maria
Ambrym Gorely Maly Semyachik Sarigan
Anatahan Great Sitkin Manam Sarychev Peak
Antuco Grimsvotn Manda Hararo Saunders
Apoyeque Guagua Pichincha Marapi Semeru
Arenal Guallatiri Maroa Semisopochnoi
Asamayama Guntur Martin Seulawah Agam
Askja Hachijojima Masaya Sheveluch
Asosan Hakoneyama Mauna Loa Shishaldin
Augustine Heard Mayon Simbo
Avachinsky Hekla McDonald Islands Sinabung
Awu Hierro Melimoyu Sinarka
Axial Seamount Hokkaido-Komagatake Merapi Siple
Azul, Cerro Home Reef Midagahara Sirung
Azumayama Hood Misti, El Slamet
Bagana Hudson, Cerro Miyakejima Soputan
Balbi Huila, Nevado del Momotombo Sorikmarapi
Bamus Hunga Tonga-Hunga Ha'apai Monowai Sotara
Banda Api Ibu Montagu Island Soufriere Hills
Bardarbunga Ijen Moyorodake [Medvezhia] Soufriere St. Vincent
Barren Island Iliamna Mutnovsky South Sarigan Seamount
Batur Iliwerung Myojinsho Spurr
Bezymianny Inielika Nabro St. Helens
Bogoslof Ioto Negra, Sierra Stromboli
Brava Iya Negro, Cerro Sulu Range
Bristol Island Izu-Torishima Nightingale Island Sumbing
Bulusan Jackson Segment Nishinoshima Sundoro
Calbuco Kaba Nisyros Suretamatai
Callaqui Kadovar Novarupta Suwanosejima
Cameroon Kambalny NW Rota-1 Taal
Campi Flegrei del Mar di Sicilia Kanaga Nyamuragira Tair, Jebel at
Cayambe Kanlaon Nyiragongo Takawangha
Cereme Karangetang Okataina Talang
Chachadake [Tiatia] Karkar Okmok Tambora
Chaiten Karthala Ontakesan Tanaga
Chiginagak Karymsky Oraefajokull Tandikat-Singgalang
Chikurachki Kasatochi Osorno Tangkoko-Duasudara
Chiles-Cerro Negro Katla Pacaya Tangkuban Parahu
Chillan, Nevados de Kavachi Pagan Tara, Batu
Chirinkotan Kelimutu Palena Volcanic Group Telica
Chirpoi Kelut Paluweh Tenerife
Cleveland Kerinci Panarea Tengger Caldera
Colima Ketoi Papandayan Three Sisters
Colo Kharimkotan Parker Tinakula
Concepcion Kick 'em Jenny Pavlof Tofua
Copahue Kikai Peuet Sague Tokachidake
Cotopaxi Kilauea Pinatubo Tolbachik
Cuicocha Kirishimayama Planchon-Peteroa Toliman
Cumbal Kizimen Poas Tongariro
Dabbahu Klyuchevskoy Popocatepetl Tungurahua
Dempo Kolokol Group Puyehue-Cordon Caulle Turrialba
Descabezado Grande Korovin Rabaul Ubinas
Dieng Volcanic Complex Koryaksky Raikoke Ulawun
Dukono Krakatau Ranakah Unknown Source
Ebeko Krummel-Garbuna-Welcker Raoul Island Unnamed
Ebulobo Kuchinoerabujima Rasshua Unnamed
Egon Kurikomayama Raung Veniaminof
Ekarma Kusatsu-Shiranesan Redoubt Villarrica
Epi Kverkfjoll Reventador West Mata
Erebus Lamington Reykjanes White Island
Erta Ale Lamongan Rincon de la Vieja Witori
Etna Langila Rinjani Wolf
Etorofu-Yakeyama [Grozny Group] Lanin Ritter Island Yasur
Eyjafjallajokull Lascar Rotorua Zaozan [Zaosan]
Fernandina Lateiki Ruang Zavodovski
Fogo Lengai, Ol Doinyo Ruapehu Zhupanovsky
Fonualei Leroboleng Ruiz, Nevado del Zubair Group
Fournaise, Piton de la Lewotobi Sabancaya
Fourpeaked Lewotolo Sakar
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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.

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.

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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) - 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)