Smithsonian / USGS Weekly Volcanic Activity Report

You are currently viewing Archived reports for the week of 24 September-30 September 2003.


















 Activity for the week of 24 September-30 September 2003


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
Dukono Halmahera (Indonesia) Ongoing
Etna Sicily (Italy) Ongoing
Fuego Guatemala Ongoing
Kilauea Hawaiian Islands (USA) Ongoing
Klyuchevskoy Central Kamchatka (Russia) Ongoing
Lamongan Eastern Java (Indonesia) Ongoing
Santa Maria Guatemala Ongoing
Soufriere Hills Montserrat Ongoing
Tungurahua Ecuador Ongoing


Ongoing Activity


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

During 24-26 September, faint ash plumes from Dukono were visible on satellite imagery rising to ~3 km a.s.l. and extending to a maximum distance of 80 km.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Etna  | Sicily (Italy)  | 37.748°N, 14.999°E  | Elevation 3295 m

On 25 September an ash-and-steam plume was recorded by the Etna video camera reaching a height less than 4.5 km a.s.l. and drifting W.

Source: Toulouse Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Fuego  | Guatemala  | 14.473°N, 90.88°W  | Elevation 3763 m

Ash plumes emitted from Fuego were visible on satellite imagery on 28 September. The first emission occurred around 0500 and produced an ash plume that covered an area of 5 x 5 km and drifted S. It was no longer visible by 0800. A second ash emission between 0815 and 0832 rose to ~ 6 km a.s.l. Ash was no longer visible on satellite imagery by 1445.

Source: Washington Volcanic Ash Advisory Center (VAAC)



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

During 24-30 September, surface lava flows were sometimes visible on Kilauea's coastal flat and upslope areas. Generally, seismicity at Kilauea's summit continued at moderate levels, with 1-2 small low-frequency earthquakes per minute occurring at shallow depths beneath the summit caldera. There were some larger earthquakes at depths of a few kilometers. There was very little deformation during the report week until small events occurred on 27 September.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)



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

Seismicity was above background levels at Kliuchevskoi during 19-26 September, with 1-3 earthquakes (M 1.7-2.2) at depths around 30 km. A gas-and-steam plume rose to ~700 m above the crater on 24 September. Kliuchevskoi remained at Concern Color Code Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Lamongan  | Eastern Java (Indonesia)  | 7.979°S, 113.342°E  | Elevation 1651 m

According to a report from aircraft personnel, on 24 September ash was visible rising to ~900 m above Lamongan. Ash was not visible on satellite imagery.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Santa Maria  | Guatemala  | 14.757°N, 91.552°W  | Elevation 3745 m

An ash emission on 28 September at 0802 from Santa María's Santiaguito lava-dome complex was visible on satellite imagery. Ash rose to ~4.3 km a.s.l., but was no longer visible by 1545.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Soufriere Hills  | Montserrat  | 16.72°N, 62.18°W  | Elevation 915 m

Volcanic activity at Soufrière Hills remained at low levels during 19-26 September. Sulfur-dioxide emission rates were slightly lower than the previous week, ranging between 500 and 600 tons per day. According to the Washington VAAC, MVO reported that ash emissions on 30 September rose to a height of ~2.4 km a.s.l. and drifted W.

Sources: Montserrat Volcano Observatory (MVO), Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Tungurahua  | Ecuador  | 1.467°S, 78.442°W  | Elevation 5023 m

Moderate-to-large ash emissions continued at Tungurahua during 24-30 September. On 24 September ash emissions produced plumes that that drifted NW and deposited small amounts of ash in the towns of Quero, Puela, Juive, and Cusúa. Volcanic blocks emitted during the eruption rolled ~1 km down the volcano's NW flank.

Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG), Washington Volcanic Ash Advisory Center (VAAC)



Weekly Reports Archive


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

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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URL https://volcano.si.edu/reports_weekly.cfm
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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)