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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 3 November-9 November 2004
Name Location Eruption Start Date Report Status
Manam Northeast of New Guinea 2014 Jun 29 New
Colima Mexico Continuing
Fuego South-Central Guatemala 2002 Jan 4 Continuing
Kilauea Hawaiian Islands (USA) 2021 Sep 29 Continuing
Nyiragongo DR Congo 2002 May 17 (?) Continuing
Ruapehu North Island (New Zealand) Continuing
Santa Maria Southwestern Guatemala 1922 Jun 22 Continuing
Sheveluch Central Kamchatka (Russia) 1999 Aug 15 Continuing
Soufriere Hills Montserrat Continuing
Spurr Alaska Peninsula Continuing
St. Helens Washington Continuing
Tungurahua Ecuador Continuing
All times are local unless otherwise stated.
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 19,386 individual reports over 1,186 weeks (average of 16 per week) on 331 different volcanoes.

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Use the dropdowns to choose the year and week for archived Weekly Reports.

Use the dropdowns to choose the year and week for archived Weekly Reports.          



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



Download Smithsonian / USGS Weekly Volcanic Activity Report Network CAP Feed

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.



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 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)

Report for Manam
According to the Darwin VAAC, ash emitted from Manam was visible on satellite imagery on 8 and 9 November at a height of ~3 km a.s.l. On the 9th the plume extended ~55 km NE.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Colima
During 5-7 November, block-lava flows continued to travel down Colima's N, W, NW, and S flanks as they have since 30 September. Several explosions occurred daily. By 8 November, the block-lava flows on the N flank was about 2,200 m long and about 330 m wide reaching to the N wall of the caldera. On the WNW flank, block-lava reached about 600 m long and 200 m wide at its widest point. During the report period, block-and-ash flows spilling from the fronts of the advancing block-lava flows on the W flank reached ~2 km from the summit.
Source: Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima
Report for Fuego
During 3-5 November, avalanches of incandescent volcanic material traveled 600-800 m towards the Taniluyá and Ceniza ravines on the volcano's flanks. The avalanches originated from two areas about 20 m below the S edge of Fuego's crater. A few explosions produced low-level plumes. During an eruptive pulse beginning around 0026 on 7 November two lava flows were emitted. Avalanches occurred from the fronts of the lava flows. A ~30-m-high scoria cone was formed in the SW part of the central crater.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Kilauea
Lava from Kilauea's PKK flow entered the sea during the evening of 4 November. This was the first time lava had entered the sea since the Banana lava delta ceased operation in early August 2004. On the morning of 5 November, the entry was small, but vigorous. The width of the feeding lava flow was ~30 m and the new delta just starting to form seaward of the Lae`apuki delta was at most 70 m long and 8 m wide perpendicular to the shoreline. By 8 November the new lava delta was ~100 m wide along the shore and reached as far as 15 m seaward from the front of the old Lae`apuki delta. During 4-8 November, all vents in the crater of Pu`u `O`o were incandescent. Seismicity was weak at Kilauea's summit, with essentially no tremor recorded. Tremor was at moderate levels at Pu`u `O`o. No significant deformation occurred.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Nyiragongo
The Toulouse VAAC reported that an eruption began at Nyiragongo sometime earlier than 0600 on 3 November. A thin W-drifting plume was visible on satellite imagery on 3 and 4 November at a height around 3.6-4.9 km a.s.l.
Source: Toulouse Volcanic Ash Advisory Centre (VAAC)
Report for Ruapehu
On 2 November, volcanic tremor at Ruapehu increased to the highest level recorded for at least 12 months. The tremor was at moderate levels, but appeared to be declining slowly. The Volcanic Alert Level remained at 1 (some signs of volcano unrest).
Source: GeoNet
Report for Santa Maria
During 3-8 November, weak-to-moderate explosions occurred at Santa María's Santiaguito lava-dome complex, producing gas-and-ash plumes to ~1 km above the volcano. Many explosions were accompanied by block-and-ash avalanches from the NE and SW edges of Caliente dome. The Washington VAAC reported that satellite imagery on 3 November showed a possible ash-bearing plume at a height of ~5 km a.s.l.
Sources: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH), Washington Volcanic Ash Advisory Center (VAAC)
Report for Sheveluch
Seismicity was above background levels at Shiveluch during 29 October-5 November, with weak shallow earthquakes occurring beneath the active lava dome. Based on interpretations of seismic data, possible ash-and-gas explosions up to 6.5 km a.s.l. occurred on 30 October and 2-4 November. Ash-and-gas explosions up to 3.5-5.5 km a.s.l. were noted all week and possible hot avalanches also occurred. According to video data, ash-and-gas explosions rose to 3.5-6 km a.s.l. during 28-30 October, and 1 and 3-4 November. Shiveluch remained at Concern Color Code Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Soufriere Hills
During 29 October to 5 November, volcanic and seismic activity at Soufrière Hills remained elevated. The seismic network recorded one rockfall, 33 hybrid earthquakes, and 39 volcano-tectonic earthquakes. The increased hybrid and volcano-tectonic activity was thought to be related to rainfall. In association with the rainfall, minor mudflow activity was recorded on 1 and 3 November. The sulfur-dioxide flux averaged about 290 metric tons per day, with a high of 440 metric tons on 30 October. An observation flight over the volcano on 4 November revealed the continued existence of standing water in the explosion pit produced by the 3 March 2004 event and no evidence of a re-start of lava-dome growth.
Source: Montserrat Volcano Observatory (MVO)
Report for Spurr
Elevated levels of seismicity continued to be recorded at Spurr during 29 October to 2 November. An earthquake swarm on 4 November consisted of as many as 10 shallow earthquakes per hour during a 6- to 7-hour period. After that, the level of seismicity declined to an average of 0-2 earthquakes per hour. Airborne measurements of volcanic gas from the volcano on 29 and 30 October indicated no significant change in the amount of carbon dioxide or sulfur-bearing gases compared to previous measurements in September. No unusual activity was observed on satellite or web-camera images. Spurr remained at Concern Color Code Yellow.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for St. Helens
According to CVO, during 3-8 November, seismicity at St. Helens remained at a low level compared to early in the unrest. The seismicity during the report period was consistent with a continuing, slow rise of magma driving uplift of the crater floor and feeding a surface extrusion of lava. The overall low rates of seismicity and gas emission suggested that the lava reaching the surface was gas poor, thereby reducing the probability of highly explosive eruptions in the near term.

Fieldwork conducted on 4 November revealed that the elongated new lava dome, which extends S from the 1980-1986 lava dome, had undergone substantial vertical growth since 27 October. A new mass of dacite extruded upward as much as 100 m. Exposed rock faces had temperatures between 400 and 500 degrees Celsius, creating incandescence that could be seen from the N on clear nights. Samples of the dome were similar to those collected on 27 October and to lava erupted in the 1980s. Most dome growth was vertical, with only about 30 m of outward growth in some directions. Hot rockfalls and avalanches occurred from the steep new faces on the dome. The finer particulates from these deposits roiled upward within the steam plume to about 800 m above the crater rim. Consequently, the near S and SW flanks of the volcano received a notable dusting of ash. The thick glacial ice that forms a buttress on the S and E sides of the dome remained largely intact. All dome growth was contained within the St. Helens crater. A continuous GPS (Global Positioning System) station N of the volcano had moved to the S by about 2 cm since late September or early October. Aerial observations on 7 November revealed that the new lava dome continued to expand and move upward. Small aprons of rockfall debris accumulated at several sites around the new dome. CVO stated that some ash emissions may be caused by these rockfalls as collapsing hot dome lava disintegrates into smaller fragments. St. Helens remained at Volcano Advisory (Alert Level 2); aviation color code Orange.
Source: US Geological Survey Cascades Volcano Observatory (CVO)
Report for Tungurahua
Volcanic and seismic activity at Tungurahua during 4-7 November were at relatively low levels, characterized by a few long-period earthquakes and small explosions. Emissions mainly consisted of steam, gas, and small amounts of ash.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)