All times are local unless otherwise stated.

Chikurachki (Russia) | 6 February-12 February 2002 | New Activity / Unrest Cite this Report
Chikurachki Kuril Volcanic Arc	The volcanism that began at Chikurachki on 25 January continued through 8 February. On 7 February a hunter observed a persistent ash column reaching ~2.5 km a.s.l. The volcano is not visible from the closest town, Severo-Kurilsk, and there are no seismic stations on Paramushir Island. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Colima (Mexico) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Colima Trans-Mexican Volcanic Belt	During 6-11 February incandescent rockfalls continued to travel down Colima's S flank extending up to 2 km from the summit. In addition, very low magnitude earthquakes continued. Scientific Advisory Committee of Colima University personnel and the authorities of Colima State determined that the continuous inflation and numerous small earthquakes that have been recorded during the past 2 weeks could lead to the formation of lava flows and pyroclastic flows. On 5 February La Yerbabuena, the nearest village to the volcano (8 km away), was evacuated. According to news reports, on 6 February University of Colima staff flew over Colima and observed lava flows travelling down the volcano's S flank. On 9 February two pyroclastic flows occurred. Sources: Centro Universitario de Estudios Vulcanológicos (CUEV) - Universidad de Colima, Reuters, Associated Press
Ijen (Indonesia) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Ijen Sunda Volcanic Arc	VSI reported that during 28 January-3 February there was an increase in seismicity at Ijen in comparison to the previous week. In addition to continuous tremor, 2 small explosions were recorded. The volcano remained at Alert Level 2. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Karymsky (Russia) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Karymsky Eastern Kamchatka Volcanic Arc	During 3-8 February thermal anomalies at Karymsky continued to be observed on AVHRR satellite imagery. No seismic data were available due to seismic station malfunction, and no ash was detected in satellite imagery. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Kilauea (United States) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Kilauea Hawaiian-Emperor Hotspot Volcano Group	Surface lava flows along the Kamoamoa lava tube system were visible extending from atop the Pulama pali scarp, down to its base. Generally, volcanic tremor remained at moderate levels at Pu`u `O`o and long-period earthquakes continued below Kilauea's caldera. Tiltmeters across the volcano showed no evidence of significant deformation. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Mayon (Philippines) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Mayon Eastern Philippine Volcanic Arc	A continuous decline in volcanic activity has occurred at Mayon since the volcano's Alert Level was reduced from 2 to 1 on 19 October 2001. On 5 February PHIVOLCS further decreased the Alert Level to 0 because all measured parameters had decreased. Incandescence, probably from still-hot residual magma beneath the crater, remained visible at the summit. Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
Merapi (Indonesia) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Merapi Sunda Volcanic Arc	During 28 January-3 February 194 lava avalanches were observed traveling down Merapi's flanks, predominately SW toward the upstream portions of the Sat and Bebeng rivers, and partly WSW to the Lamat and Senowo rivers. The maximum run-out distance was ~2.7 km. There were no major observed changes in seismicity; 855 lava avalanche signals dominated the seismicity. The volcano remained at Alert Level 2 (on a scale of 1-4). Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Popocatepetl (Mexico) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Popocatepetl Trans-Mexican Volcanic Belt	During the week, Popocatépetl emitted small clouds of steam, gas, and generally minor amounts of ash. In addition, episodes of harmonic tremor were recorded. Source: Centro Nacional de Prevencion de Desastres (CENAPRED)
Sheveluch (Russia) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	During 1-8 February seismicity was above background levels at Shiveluch with many shallow earthquakes occurring within the volcano's edifice. Shallow, weak seismic signals (possible collapses and avalanches) were also registered. Small explosions produced low-rising gas-and-steam plumes throughout the week. On 2 February short-lived explosions produced an ash-and-gas cloud that rose ~1.5 km above the dome. The eruption was accompanied by an increase in shallow seismic events and hot rock avalanches. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Soufriere Hills (United Kingdom) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Soufriere Hills Lesser Antilles Volcanic Arc	During 1-8 February volcanism slightly increased at Soufrière Hills in comparison to the previous week. Lava-dome growth continued to be focused on the E and NE sides of the dome. The summit of the dome was blocky and massive, rather than covered with spines like it was during the previous week. New pyroclastic-flow deposits were seen in Tar River to the E of the volcano and in White River to the SW. Sources: Washington Volcanic Ash Advisory Center (VAAC), Montserrat Volcano Observatory (MVO)
Tungurahua (Ecuador) | 6 February-12 February 2002 | Continuing ActivityCite this Report
Tungurahua Andean Northern Volcanic Arc	During 6-11 February, several emissions of steam and ash occurred at Tungurahua. The highest rising ash cloud was produced by an eruption on 6 February at 0935; it reportedly reached a height of ~3 km above the volcano and drifted to the N and NE. On the same day lahars traveled to the sector of La Pampas. Nearly continuous gas-and-ash emissions rose to 1 km above the volcano on the 6th and 8th, and to 3 km on the 10th. Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN), Washington Volcanic Ash Advisory Center (VAAC)

Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,322 individual reports over 1,229 weeks (average of 17 per week) on 336 different volcanoes.

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

 News Feeds and Google Placemarks

 Criteria & Disclaimers

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.

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)