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SI/USGS Weekly Volcanic Activity Report 2-8 June 2010 9 June 2010

Posted by admin in activity reports, Alaska, Batu Tara, Bezymianny, Cleveland, Dukono, Ecuador, eruptions, Eyjafjöll, Guatemala, Hawaii, Iceland, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mexico, Pacaya, Papua New Guinea, Philippines, Popocatépetl, Russia, Sakura-jima, Santa María, Shiveluch, Taal, Tungurahua, Ulawun, United States, Weekly Volcanic Activity Reports.
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Some highlights from the last week of volcanic activity reported by the Global Volcanism Program:

  • Pacaya: strombolian activity ejects material 200 m into the air
  • Taal: elevated seismicity and inflation causing concern
  • Tungurahua: explosions, ashfall, plumes up to 9 km altitude
  • Eyjafjallajökull: fluctuating tremor, fresh ashfall, plumes up to 4.5 km altitude

SI/USGS Weekly Volcanic Activity Report 2-8 June 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 2-8 June 2010 is now available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Bezymianny (Russia), Cleveland (Alaska, USA), Pacaya (Guatemala), Taal (Philippines), Tiatia (Russia), Tungurahua (Ecuador), Ulawun (Papua New Guinea).

Ongoing activity: Batu Tara (Indonesia), Dukono (Indonesia), Eyjafjallajökull (Iceland), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Popocatépetl (Mexico), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Russia).

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SI/USGS Weekly Volcanic Activity Report 24 February-2 March 2010 4 March 2010

Posted by admin in activity reports, Caribbean, Costa Rica, Ecuador, eruptions, Fuego, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mayon, Mexico, Pacaya, Philippines, Poás, Popocatépetl, Russia, Sakura-jima, Santa María, Semeru, Shiveluch, Soufrière Hills, Tungurahua, United States, Weekly Volcanic Activity Reports.
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Some highlights from the last week of volcanic activity reported by the Global Volcanism Program:

  • Poás: grey and sulphur-scented sediment thrown out by a phreatic explosion
  • Santa María: ash plumes from the Santiaguito lava dome complex reached 2.8-3.1 km altitude
  • Tungurahua: ash plumes reached 6.5-8.0 km altitude

SI/USGS Weekly Volcanic Activity Report 24 February-2 March 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 24 February-2 March 2010 is now available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Poás (Costa Rica), Semeru (Indonesia), Soufrière Hills (Montserrat).

Ongoing activity: Fuego (Guatemala), Karymsky (Russia), Kilauea (USA), Kliuchevskoi (Russia), Mayon (Philippines), Pacaya (Guatemala), Popocatépetl (Mexico), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Russia), Tungurahua (Ecuador).

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SI/USGS Weekly Volcanic Activity Report 27 January-2 February 2010 4 February 2010

Posted by admin in activity reports, Africa, Caribbean, Congo (Dem. Rep.), Ecuador, eruptions, Gaua, Hawaii, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mexico, Nyamuragira, Nyiragongo, Pacific, Popocatépetl, Russia, Sakura-jima, Sangay, Shiveluch, Soufrière Hills, Suwanose-jima, Tungurahua, United States, Vanuatu, Weekly Volcanic Activity Reports.
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Some of the volcanic activity headlines this week:

  • Nyiragongo: probable lava lake activity producing thermal anomalies
  • Tungurahua: roars, rumbles, explosions, lava fountains
  • Gaua: activity intensified, explosions, dark ash plumes, strombolian activity

SI/USGS Weekly Volcanic Activity Report 27 January-2 February 2010

Click on the map for a larger version (1280 x 898 pixels).

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 27 January-2 February 2010 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Nyiragongo (Democratic Republic of Congo), Tungurahua (Ecuador).

Ongoing activity: Gaua (Vanuatu), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Nyamuragira (Democratic Republic of Congo), Popocatépetl (Mexico), Sakura-jima (Japan), Sangay (Ecuador), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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Dome growth continues at Colima 23 January 2010

Posted by admin in activity reports, Colima, Mexico.
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Low-level eruptive activity at Colima, the most active volcano in Mexico, has been causing concern recently. On 26 November 2009 an overflight reported that the lava dome, which began its current phase of growth in February 2007, filled 80% of the summit crater. According to reports of the most recent overflight, which took place on 20 January 2010, the dome now fills 85% of the crater and has reached 65 metres in height. The local civil protection authority, the Unidad Estatal de Protección Civil y Bomberos (UEPCB), reports that there is a risk of dome collapses taking place, particularly in the south-western area of the summit where instability is greatest, but that the current activity of the volcano ‘is not a risk to the surrounding population’. A 7.5-km-radius exclusion zone remains in force around the volcano.

News
Sigue creciendo domo del Volcán de ColimaMilenio, 21 January 2010
Prevén derrumbes por crecimiento de domo del Volcán de ColimaEl Informador, 21 January 2010
Prevén erupciones de baja intensidad del Volcán de Colima en México – EFE, 21 January 2010
Mantienen alerta por crecimiento de domo en el Volcán ColimaEl Informador, 22 January 2010

Information
Global Volcanism Program: Colima – information from the GVP for Colima (1401-04=)
Gobierno del Estado de Colima: Informes de Actividad Volcánica – Colima bulletins from the Colima State Government
Observatorio vulcanológico – the University of Colima volcanological observatory, with some information for Colima volcano
Colima webcam – not always operational, but nice pictures (weather allowing) when it’s working

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 6-12 January 2010 13 January 2010

Posted by admin in activity reports, Africa, Alaska, Barren Island, Caribbean, Chaitén, Chile, Congo (Dem. Rep.), Costa Rica, Ecuador, eruptions, Fuego, Guatemala, Hawaii, India, Indian Ocean, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mayon, Mexico, Nyamuragira, Pacaya, Papua New Guinea, Philippines, Piton de la Fournaise, Popocatépetl, Rabaul, Redoubt, Russia, Sakura-jima, Santa María, Shiveluch, Soufrière Hills, Suwanose-jima, Tungurahua, Turrialba, United States, Weekly Volcanic Activity Reports.
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Some of the volcanic activity headlines this week:

  • Mayon: alert level lowered to 2
  • Redoubt: alert level lowered to Normal/Green
  • Tungurahua: gas-and-ash plume rose to 6.5 km altitude
  • Shiveluch: ash plumes reported rising to 4.3-6.4 km altitude
  • Soufrière Hills: extensive pyroclastic flows

SI/USGS Weekly Volcanic Activity Report 6-12 January 2010

Click on the map for a larger version (1280 x 898 pixels).

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 6-12 January 2010 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Mayon (Philippines), Nyamuragira (Democratic Republic of Congo), Piton de la Fournaise (Réunion), Tungurahua (Ecuador), Turrialba (Costa Rica).

Ongoing activity: Barren Island (India), Chaitén (Chile), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Pacaya (Guatemala), Popocatépetl (Mexico), Rabaul (Papua New Guinea), Redoubt (Alaska, USA), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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SI/USGS Weekly Volcanic Activity Report 2-8 December 2009 10 December 2009

Posted by admin in activity reports, Ambrym, Caribbean, Chaitén, Chile, Colima, Dukono, eruptions, Fuego, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Llaima, Mexico, Nicaragua, Papua New Guinea, Rabaul, Russia, Sakura-jima, San Cristóbal, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Vanuatu, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 2-8 December 2009

Click on the map for a larger version (1280 x 898 pixels).

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 2-8 December 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Llaima (Chile).

Ongoing activity: Ambrym (Vanuatu), Chaitén (Chile), Colima (Mexico), Dukono (Indonesia), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Rabaul (Papua New Guinea), Sakura-jima (Japan), San Cristóbal (Nicaragua), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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Mexico: Colima’s restlessness causes concern 3 December 2009

Posted by admin in activity reports, Colima, Mexico.
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Colima volcano in western Mexico has the distinction of being the most active volcano in that country: over seventy eruptions (since 7690 BC ± 500 years) are listed by the Global Volcanism Program, with the most recent bout of activity beginning in November 1997 and still ongoing. The volcano is situated in a densely populated region, with over 30,000 people living within 40 km of its crater – as a result it is one of the sixteen Decade Volcanoes, active volcanoes seen as posing particularly high risks to populous areas.

During 2009 Colima (also known as Volcán de Fuego) has been emitting white and grey plumes that have reached as high as 6.4 km above sea level, and there have been occasional ejections of incandescent material. Both ground and air exclusion zones have been imposed around Colima by state civil protection authorities. The high level of activity has been causing some concern in the surrounding area, with reports of a ‘high possibility’ that the volcano is preparing to erupt; the authorities have responded by playing down reports of imminent risks, while stressing the need for local people to remain watchful and prepared to respond to any increase in activity.

On 26 November there was an overflight of the volcano which reported that the lava dome within the main crater of Colima, which has been growing since February 2007, now blocks 80% of the crater and has attained a height of 60 metres (another news source gives a height of 45 metres, diameter of 270 metres and volume of 2 million cubic metres). Material has accumulated against the western wall of the crater and against a section of the southern wall, which could produce occasional landslides down the western slopes of the volcano. High temperatures were reported within the crater.

Fresh lava flows and ejections of incandescent material some 50 metres from the crater were reported on 2 December. The latest available bulletin (2 December) from the Unidad Estatal de Protección Civil Colima reports continuous fumarolic activity and the ejection of incandescent material, without any damage or injuries.

News
Podría hacer erupción el Volcán de ColimaEl Informador, 25 November 2009
Volcán de Colima, en riesgo de erupciónEl Universal, 25 November 2009
Despierta el volcán ColimaEl Occidental, 26 November 2009
Volcán Colima no representa riesgos, según los expertosEl Informador, 26 November 2009
Realizan sobrevuelo de observación en domo del Volcán de ColimaEl Financiero, 26 November 2009
Detectan posible destrucción de domo del Volcán de ColimaExcélsior, 2 December 2009
Volcan de Colima derrama lavaEl Universal, 2 December 2009

Information
Global Volcanism Program: Colima – information from the GVP for Colima (1401-04=)
Gobierno del Estado de Colima: Informes de Actividad Volcánica – Colima bulletins from the Colima State Government
Observatorio vulcanológico – the University of Colima volcanological observatory, with some information for Colima volcano

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 18-24 November 2009 26 November 2009

Posted by admin in activity reports, Batu Tara, Caribbean, Chaitén, Chile, Colombia, Ecuador, eruptions, Galeras, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mexico, Pacaya, Papua New Guinea, Popocatépetl, Rabaul, Reventador, Russia, Sakura-jima, Santa María, Sarychev Peak, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 18-24 November 2009

Click on the map for a larger version (1280 x 898 pixels).

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 18-24 November 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Galeras (Colombia), Sarychev Peak (Russia).

Ongoing activity: Batu Tara (Indonesia), Chaitén (Chile), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Pacaya (Guatemala), Popocatépetl (Mexico), Rabaul (Papua New Guinea), Reventador (Ecuador), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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Popocatépetl ash falls across Tlaxcala 23 November 2009

Posted by admin in activity reports, Mexico, Popocatépetl.
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Popocatepetl volcano, 21 November 2009 (CENAPRED)

Popocatépetl volcano had an active 24 hours over 21 and 22 November, reports CENAPRED, Mexico’s Centro Nacional de Prevención de Desastres (CENAPRED bulletins for November can be found by searching via this archive page). A magnitude 2 volcano-tectonic earthquake was recorded and there were four small eruptive events during the 24 hours preceding 11:00 local time on 22 November, the most significant of which, occuring at 18:31 local time on 21 November, produced an ash column of 3.5 km altitude. The image above, from CENAPRED’s Popocatépetl webcam to the north of the volcano, shows the situation at 18:38 local time, with incandescence and ash emissions clearly visible.

Ashfall was reported to the north and east, across the state of Tlaxcala. The Mexican press (see links below) reports that ash covered vehicles and roads in 38 municipalities in Tlaxcala, but that ash quantities were ‘minor’ and that no problems resulted. Following this event, CENAPRED reports that the volcano returned to its normal conditions.

Popocatepetl, 23 November 2009 (CENAPRED)

Since then things have indeed been quieter, with Popocatépetl producing a number of low-intensity eruptions of water vapour and gas with little no ash . The alert level for Popocatépetl remains at Level 2, Yellow (Amarillo). The webcam image above shows the volcano releasing a thin, mainly steam, plume at 10:41 local time today.

News
Caen cenizas del Popocatépetl sobre al menos 40 municipios de TlaxcalaLa Jornada, 23 November 2009
Cae ceniza volcánica en 38 municipios de TlaxcalaMilenio, 23 November 2009
Reportó el Cenapred la caída de ceniza en Atlixco, Huejotzingo y Tlaxcala el sábado pasadoLa Jornada de Oriente, 23 November 2009
Registra Don Goyo fumarola de 3 kilómetros de alturaEl Sol de Cuautla, 23 November 2009

Information
Global Volcanism Program: Popocatépetl – summary information for Popocatépetl (1401-09=)
CENAPRED – volcano monitoring information from CENAPRED

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 11-17 November 2009 19 November 2009

Posted by admin in activity reports, Arenal, Bagana, Caribbean, Chaitén, Chile, Colombia, Costa Rica, Ecuador, eruptions, Fuego, Galeras, Guatemala, Hawaii, Japan, Kamchatka, Karymsky, Kilauea, Kizimen, Kliuchevskoi, Mayon, Mexico, Nevado del Huila, Papua New Guinea, Popocatépetl, Rabaul, Reventador, Russia, Sakura-jima, Sangay, Santa María, Shiveluch, Soufrière Hills, Suwanose-jima, United States.
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SI/USGS Weekly Volcanic Activity Report 11-17 November 2009

Click on the map for a larger version (1280 x 898 pixels).

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 11-17 November 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Galeras (Colombia), Mayon (Philippines).

Ongoing activity: Arenal (Costa Rica), Bagana (Papua New Guinea), Chaitén (Chile), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Kizimen (Russia), Kliuchevskoi (Russia), Nevado del Huila (Colombia), Popocatépetl (Mexico), Rabaul (Papua New Guinea), Reventador (Ecuador), Sakura-jima (Japan), Sangay (Ecuador), Santa María (Guatemala), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

Note: a.s.l. = ‘above sea level’.

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