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Smithsonian / USGS Weekly Volcanic Activity Report

Weekly Volcanic Activity Map

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 and averaging 16 reported volcanoes, this is not a comprehensive list of all eruptions this week, but rather a summary of activity that meet criteria discussed in the "Criteria and Disclaimers" section below.

Volcanic activity reported here is preliminary and subject to change. Carefully reviewed, detailed narratives over longer time periods are published as reports of the Bulletin of the Global Volcanism Network available through volcano profile pages.

Smithsonian / USGS Weekly Volcanic Activity Report for the week of 15 June-21 June 2005
Name Location Eruption Start Date Report Status
Papandayan Western Java (Indonesia) New
Anatahan Mariana Islands (USA) Continuing
Bagana Bougainville (Papua New Guinea) 2000 Feb 28 (in or before) Continuing
Barren Island Andaman Islands (India) 2018 Sep 25 Continuing
Colima Mexico Continuing
Dukono Halmahera (Indonesia) 1933 Aug 13 Continuing
Ijen Eastern Java (Indonesia) Continuing
Kilauea Hawaiian Islands (USA) Continuing
Langila New Britain (Papua New Guinea) 2015 Oct 22 (?) Continuing
Manam Papua New Guinea 2014 Jun 29 Continuing
Reventador Ecuador 2008 Jul 27 Continuing
Sheveluch Central Kamchatka (Russia) 1999 Aug 15 Continuing
Soufriere Hills Montserrat Continuing
St. Helens United States Continuing
Ulawun New Britain (Papua New Guinea) Continuing
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 16,886 individual reports over 1,074 weeks (average of 16 per week) on 313 different volcanoes.

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


Download Smithsonian / USGS Weekly Volcanic Activity Report Network RSS Feed

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. At the end of each report is a list of the sources used. 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. This feature was first made available on 5 March 2008.



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Download Smithsonian/USGS Weekly Volcanic Activity Report Network Link Download Smithsonian / USGS Weekly Volcanic Activity Report Network Link

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 profile page and to the complete Weekly Report for that week. This feature was first made available on 1 April 2009.

 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.

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)

Report for Papandayan
On 16 June, DVGHM raised the Alert Level at Papandayan from 1 to 2 (on a scale of 1-4) due to increased activity at the volcano. Beginning in early June 2005 the number of volcanic earthquakes increased in comparison to the previous months and the temperatures of fumaroles increased 3-9 degrees C above normal levels. People were not permitted to visit Mas and Baru craters.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Anatahan
On 19 June at 1525 a brief eruption at Anatahan produced a steam-and-ash cloud that reached a height of ~15.2 km (49,900 ft) a.s.l. Guam Meteorological Weather Office radar showed that the cloud drifted E. No particular seismic signal was associated with the eruption. Two days before the eruption, the amplitude of continuous tremor was relatively high. During the days before and after the eruption, ash reached 3-4.6 km (9,800-15,100 ft) a.s.l. and drifted W.
Source: Emergency Management Office of the Commonwealth of the Mariana Islands and United States Geological Survey Volcano Hazards Program
Report for Bagana
A plume from Bagana was visible on satellite imagery on 21 June extending W. The height of the plume was not reported.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Barren Island
According to a news article, after visiting Barren Island on 14 June scientists determined that volcanic activity had increased since it was first noted on 28 May. Pyroclasts were hurled as high as 100 m above the volcano. The eruption occurred from a new vent on the SW rim of the volcano's crater.
Source: PTI News
Report for Colima
Several explosions occurred at Colima during June 15-21, reaching a maximum height of ~6.1 km (20,000 ft) a.s.l.
Sources: Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima, Washington Volcanic Ash Advisory Center (VAAC)
Report for Dukono
During 20-21 June, ash from Dukono was visible on satellite imagery drifting NW. The height of the ash was not reported.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Ijen
According to the Darwin VAAC, on 17 June a pilot observed a plume from Ijen at a height of ~6.1 km (20,000 ft) a.s.l. Ash was not visible on satellite imagery.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Kilauea
On 21 June lava from Kilauea continued to enter the sea and there was a small number of surface lava flows on the Pulama pali fault scarp. Background volcanic tremor remained above normal levels at Kilauea's summit and at moderate levels at Pu`u `O`o. There was no significant change in deformation at the volcano.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Langila
During 16-17 June, ash plumes from Langila were visible on satellite imagery. The heights of the plumes were not reported.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Manam
During 16-17 June, ash plumes from Manam were visible on satellite imagery. The heights of the plumes were not reported.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Reventador
According to IG, during 11-12 June lobes of a lava flow traveled down Reventador's S and SE flanks. A lava flow that was traveling SE earlier in June had ceased to move. Plumes of gas-and-ash rose 1-2 km above the volcano's crater and typically drifted NW. The Washington VAAC reported that low-level gas-and-ash emissions continued during 15-21 June.
Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG), Washington Volcanic Ash Advisory Center (VAAC)
Report for Sheveluch
Shiveluch's lava dome continued to grow during 10-17 June. A gas-and-steam plume rose ~400 m above the 2.5-km-high lava dome (9,500 ft a.s.l.) on 10 June. A thermal anomaly was visible at the lava dome on satellite imagery on several days. Shiveluch remained at Concern Color Code Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Soufriere Hills
Seismic and volcanic activity at Soufrière Hills were at elevated levels during 10-17 June. The seismic network at the volcano recorded 17 hybrid earthquakes, 20 long period earthquakes, 46 volcano-tectonic earthquakes, and 7 rockfalls. A period of ash venting that began on 13 June at 0600 declined in intensity during the report week. The ash venting was caused by the rapid release of steam and other volcanic gases, possibly triggered by intense rainfall on the night of 12 June. The daily recorded sulfur-dioxide flux varied from 170 metric tons per day (t/d) on 10 June, to a maximum of 750 t/d on 14 June, with an average of 460 t/d for the week.
Source: Montserrat Volcano Observatory (MVO)
Report for St. Helens
During 15-20 June, growth of the new lava dome inside the crater of Mount St. Helens continued, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash. Observations made on 15 June revealed that the lava spine continued to grow and that temperatures in cracks near the base of the spine were near 700 degrees C. Thermal data from 15 June suggested that much of the western part of the dome was moving upward, as well as southward. St. Helens remained at Volcano Advisory (Alert Level 2); aviation color code Orange.
Source: US Geological Survey Cascades Volcano Observatory (CVO)
Report for Ulawun
On 21 June, a small ash plume from Ulawun was visible on satellite imagery extending NW of the volcano's summit. The height of the plume was not reported.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)