Logo link to homepage

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 13 September-19 September 2006
Name Country Volcanic Region Eruption Start Date Report Status
Karymsky Russia Eastern Kamchatka Volcanic Arc New
Raoul Island New Zealand Northern Kermadec Volcanic Arc New
Soufriere Hills United Kingdom Lesser Antilles Volcanic Arc New
Tengger Caldera Indonesia Sunda Volcanic Arc New
Aira Japan Ryukyu Volcanic Arc 2017 Mar 25 Continuing
Kilauea United States Hawaiian-Emperor Hotspot Volcano Group 2024 Dec 23 Continuing
Mayon Philippines Eastern Philippine Volcanic Arc Continuing
Semeru Indonesia Sunda Volcanic Arc 2017 Jun 6 Continuing
St. Helens United States High Cascades Volcanic Arc Continuing
Suwanosejima Japan Ryukyu Volcanic Arc 2004 Oct 23 Continuing
Tungurahua Ecuador Northern Andean Volcanic Arc Continuing
Ubinas Peru Central Andean Volcanic Arc Continuing
All times are local unless otherwise stated.
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 21,204 individual reports over 1,267 weeks (average of 17 per week) on 339 different volcanoes.

Search by Date



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.          



Search by Volcano



Adams Cotopaxi Ijen Lewotobi Pinatubo Stromboli
Agung Cuicocha Iliamna Lewotolok Planchon-Peteroa Sulu Range
Ahyi Cumbal Iliwerung Little Sitkin Poas Sumbing
Aira Dabbahu Inielika Llaima Popocatepetl Sumisujima
Akan Davidof Ioto Lokon-Empung Purace Sundoro
Alaid Dempo Irazu Lonquimay Puyehue-Cordon Caulle Suoh
Alu-Dalafilla Descabezado Grande Iwatesan Lopevi Rabaul Suretamatai
Ambae Dieng Volcanic Complex Iya Machin Raikoke Suwanosejima
Ambang Dukono Izu-Torishima Makushin Ranakah Taal
Ambrym East Epi Jackson Segment Maly Semyachik Raoul Island Tair, Jebel at
Anatahan Ebeko Kaba Manam Rasshua Takawangha
Aniakchak Ebulobo Kadovar Manda Hararo Raung Talang
Antillanca Volcanic Complex Edgecumbe Kaitoku Seamount Marapi Redoubt Tambora
Antuco Egon Kama'ehuakanaloa Maroa Reventador Tanaga
Apoyeque Ekarma Kambalny Martin Reykjanes Tandikat-Singgalang
Arenal Eldey Kanaga Masaya Rincon de la Vieja Tangkoko-Duasudara
Asamayama Erebus Kanlaon Matthew Island Rinjani Tangkuban Parahu
Askja Erta Ale Karangetang Maule, Laguna del Ritter Island Tara, Batu
Asosan Etna Karkar Mauna Loa Rotorua Ta'u
Atka Volcanic Complex Etorofu-Yakeyama [Grozny Group] Karthala Mayon Ruang Taupo
Augustine Eyjafjallajokull Karymsky McDonald Islands Ruapehu Telica
Avachinsky Fagradalsfjall Kasatochi Melebingoy Ruby Tenerife
Awu Fentale Katla Melimoyu Ruiz, Nevado del Tengger Caldera
Axial Seamount Fernandina Katmai Merapi Sabancaya Three Sisters
Azul, Cerro Fogo Kavachi Midagahara Sakar Tinakula
Azumayama Fonualei Kelimutu Misti, El Salak Tofua
Bagana Fournaise, Piton de la Kelud Miyakejima San Cristobal Tokachidake
Balbi Fourpeaked Kerinci Momotombo San Miguel Tolbachik
Bamus Fuego Ketoi Monowai San Vicente Toliman
Banda Api Fujisan Kharimkotan Montagu Island Sangay Tongariro
Bardarbunga Fukutoku-Oka-no-Ba Kick 'em Jenny Moyorodake [Medvezhia] Sangeang Api Trident
Barren Island Galeras Kie Besi Mutnovsky Santa Ana Tungurahua
Batur Galunggung Kikai Myojinsho Santa Maria Turrialba
Bezymianny Gamalama Kilauea Nabro Sao Jorge Ubinas
Bogoslof Gamkonora Kirishimayama Negra, Sierra Sarigan Ugashik-Peulik
Brava Gareloi Kita-Ioto Negro, Cerro Sarychev Peak Ukinrek Maars
Bristol Island Gaua Kizimen Nightingale Island Saunders Ulawun
Bulusan Gede Klyuchevskoy Nishinoshima Savo Unnamed
Calbuco Gorely Kolokol Group Nisyros Semeru Unnamed
Callaqui Great Sitkin Kolumbo Novarupta Semisopochnoi Veniaminof
Cameroon Grimsvotn Koryaksky NW Rota-1 Seulawah Agam Villarrica
Campi Flegrei Guagua Pichincha Krakatau Nyamulagira Sheveluch Vulcano
Campi Flegrei del Mar di Sicilia Guallatiri Krummel-Garbuna-Welcker Nyiragongo Shishaldin West Mata
Cayambe Guntur Krysuvik-Trolladyngja Ofu-Olosega Simbo Westdahl
Chachadake [Tiatia] Hachijojima Kuchinoerabujima Okataina Sinabung Whakaari/White Island
Chaiten Hakoneyama Kurikomayama Okmok Sinarka Witori
Chiginagak Heard Kusatsu-Shiranesan Ontakesan Siple Wolf
Chikurachki Hekla Kverkfjoll Oraefajokull Sirung Wrangell
Chiles-Cerro Negro Helgrindur La Palma Osorno Slamet Yakedake
Chillan, Nevados de Hierro Lamington Pacaya Snaefellsjokull Yasur
Chirinkotan Hokkaido-Komagatake Lamongan Pagan Soputan Yellowstone
Chirpoi Home Reef Langila Palena Volcanic Group Sorikmarapi Yufu-Tsurumi
Ciremai Hood Lanin Paluweh Sotara Zaozan [Zaosan]
Cleveland Huaynaputina Lascar Panarea Soufriere Hills Zavodovski
Colima Hudson, Cerro Late Papandayan Soufriere St. Vincent Zhupanovsky
Colo Huila, Nevado del Lateiki Pavlof South Sarigan Seamount Zubair Group
Concepcion Hunga Tonga-Hunga Ha'apai Lengai, Ol Doinyo Pelee Spurr
Copahue Ibu Leroboleng Peuet Sague St. Helens
 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 Karymsky
KVERT reported on 15 September that the Concern Color Code level at Karymsky was raised from Yellow to Orange. Approximately 50-100 shallow earthquakes occurred daily during 9-15 September. During 8-10 and 12 September, a thermal anomaly was detected in the crater. An ash plume was visible on satellite imagery extending ~140 km SE on 13 September. On 17 and 19 September, eruption plumes rose to altitudes of 2.7 km (9,000 ft) a.s.l. and drifted SE.
Sources: Kamchatkan Volcanic Eruption Response Team (KVERT), Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Raoul Island
The Alert Level at Raoul Island was lowered to 0 (on a scale of 0-5) on 18 September due to a general decline in activity. Since April 2006, no significant earthquake activity had occurred within ~30 km of the island, the water in Green Lake dropped to the pre-eruption level, and on-going hydrothermal activity returned to normal.
Source: GeoNet
Report for Soufriere Hills
MVO reported that during 8-15 September, the lava dome at Soufrière Hills continued to grow at a high rate. On 9 and 10 September, ash venting from the Gages wall was vigorous and accompanied by small explosions producing black jets up to 100 m above the vent. Pyroclastic flows from fountain collapse occurred on all sides of the dome and notably reached 1 km W down Gages valley. On 11 September, the collapse of an over-hanging lava lobe produced pyroclastic flows NE down the Tar River valley. On 13 September, one pyroclastic flow in the same area reached the sea. On 14 September, vigorous ash venting resumed.

Based on information from the MVO, pilot reports, and the Piarco MWO, the Washington VAAC reported that continuous ash and gas emissions during 13-19 September produced plumes that reached altitudes of 2.4-3.7 km (8,000-12,000 ft) a.s.l. and drifted predominantly NW, W, and SW. A hotspot was visible on satellite imagery.
Sources: Montserrat Volcano Observatory (MVO), Washington Volcanic Ash Advisory Center (VAAC)
Report for Tengger Caldera
CVGHM reported that the Alert Level for Tengger Caldera was lowered one level to 2 (on a scale of 1-4) on 18 September due to decreased activity.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Aira
Based on information from JMA, the Tokyo VAAC reported that an eruption at Sakura-jima on 19 September generated a plume that rose straight up to ~3 km (~10,000 ft) a.s.l.
Source: Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Kilauea
The summit of Kilauea continued to slowly inflate S of Halema'uma'u caldera during 13-19 September. Incandescence was intermittently visible from the East Pond and January vents, South Wall complex, and Drainhole vent in Pu'u 'O'o's crater. Lava from the Campout and PKK systems continued to flow off of a lava delta into the ocean at the East Lae'apuki and East Ka'ili'ili entries.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Mayon
Seismic activity and lava extrusion from Mayon continued to remain low during 13-19 September. Steam plumes from the summit crater reached heights of 300 m above the crater (9,000 ft a.s.l.) and drifted mainly SW, NE, and SE. The Alert Level remained at 3 with a 6-km-radius Permanent Danger Zone and 7 km Extended Danger Zone on the SE slopes in effect.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
Report for Semeru
Based on pilot reports, the Darwin VAAC reported that an eruption plume from Semeru reached 4.3 km (14,000 ft) a.s.l. and drifted W on 15 September.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for St. Helens
Data from deformation-monitoring instruments showed that the lava dome at Mount St. Helens continued to grow during 13-19 September, despite relatively low seismicity levels.
Source: US Geological Survey Cascades Volcano Observatory (CVO)
Report for Suwanosejima
Based on information from JMA and a pilot report, the Tokyo VAAC reported on 19 September that ash plumes from Suwanose-jima reached altitudes of 3.4 km (11,000 ft) a.s.l. and drifted E.
Source: Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Tungurahua
During 13-19 September, seismicity at Tungurahua remained relatively low. Steam-and-gas plumes rose to a maximum height of 1 km above the summit (19,800 ft a.s.l.) and drifted predominantly W. Incandescence at the summit was observed at night.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Report for Ubinas
Based on pilot reports, the Buenos Aires VAAC reported continuous emission of ash plumes from Ubinas on 13 September. The plumes rose to altitudes of 4.9 km (16,000 ft) a.s.l.
Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)