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SI/USGS Weekly Volcanic Activity Report 18-24 August 2010 26 August 2010

Posted by admin in activity reports, Ambrym, Batu Tara, Caribbean, Colombia, Dukono, eruptions, Galeras, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mexico, Nicaragua, Pacific, Pagan, Papua New Guinea, Popocatépetl, Russia, Sakura-jima, San Cristóbal, Sangay, Shiveluch, Soufrière Hills, Suwanose-jima, Ulawun, United States, Vanuatu, Weekly Volcanic Activity Reports.
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Here’s the regular review of the past week’s volcanic activity, compiled by Sally Kuhn Sennert and published by the Global Volcanism Program:

  • Galeras: erupted on 25 August
  • Popocatépetl: produced a 1-km steam plume on 23 August
  • San Cristóbal: a report of a steam plume on 20 August

SI/USGS Weekly Volcanic Activity Report 18-24 August 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 18-24 August 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: Galeras (Colombia).

Ongoing activity: Ambrym (Vanuatu), Batu Tara (Indonesia), Dukono (Indonesia), Karymsky (Russia), Kilauea (Hawaii USA), Kliuchevskoi (Russia), Pagan (Mariana Islands), Popocatépetl (Mexico), Sakura-jima (Japan), San Cristóbal (Nicaragua), Sangay (Ecuador), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan), Ulawun (Papua New Guinea).

Note: a.s.l. = ‘above sea level’.

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SI/USGS Weekly Volcanic Activity Report 14-20 July 2010 22 July 2010

Posted by admin in activity reports, Batu Tara, Caribbean, Colombia, eruptions, Fuego, Gorely, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Nevado del Ruiz, Pacaya, Russia, Sakura-jima, Santa María, Shiveluch, Soufrière Hills, Suwanose-jima, Tungurahua, Ubinas, United States, volcanoes, Weekly Volcanic Activity Reports.
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Some highlights from the last week of volcanic activity reported by the Global Volcanism Program, including a possible eruption at Colombia’s Nevado del Ruiz:

  • Nevado del Ruiz: a 7 km plume reported, possibly from an eruption
  • Fuego: explosions producing plumes up to 4.4 km altitude
  • Santa María: lots of explosions from the Santiaguito lava dome complex

SI/USGS Weekly Volcanic Activity Report 30 June - 6 July 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 14-20 July 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: Gorely (Russia), Soufrière Hills (Montserrat), Ubinas (Peru).

Ongoing activity: Batu Tara (Indonesia), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii USA), Kliuchevskoi (Russia), Nevado del Ruiz (Colombia), Pacaya (Guatemala), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Russia), Suwanose-jima (Japan), Tungurahua (Ecuador).

Note: a.s.l. = ‘above sea level’.

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SI/USGS Weekly Volcanic Activity Report 16-22 June 2010 24 June 2010

Posted by admin in activity reports, Batu Tara, Caribbean, Colombia, Dukono, Ecuador, eruptions, Etna, Gaua, Gorely, Guatemala, Hawaii, Indonesia, Ioto, Italy, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Nevado del Huila, Pacaya, Papua New Guinea, Russia, Sakura-jima, Shiveluch, Soufrière Hills, Tiatia, Tungurahua, Ulawun, United States, Vanuatu, Weekly Volcanic Activity Reports.
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Some highlights from the last week of volcanic activity reported by the Global Volcanism Program:

  • Etna: hot landslides generate ash clouds
  • Nevado del Huila: seismicity increases, sulphur dioxide plumes detected
  • Tungurahua: steam-and-ash plumes, daily ashfall
  • Kliuchevskoi: strombolian activity
  • Sakura-jima: 550 eruptions so far in 2010, a new record for this hyper-active volcano

SI/USGS Weekly Volcanic Activity Report 16-22 June 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 16-22 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: Etna (Italy), Gorely (Russia), Ioto (Japan), Nevado del Huila (Colombia), Pacaya (Guatemala), Tiatia (Russia), Tungurahua (Ecuador), Ulawun (Papua New Guinea).

Ongoing activity: Batu Tara (Indonesia), Dukono (Indonesia), Gaua (Vanuatu), Karymsky (Russia), Kilauea (Hawaii USA), Kliuchevskoi (Russia), Sakura-jima (Japan), Shiveluch (Russia), Soufrière Hills (Montserrat).

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Volcanoes of southern Colombia: overflights, 15 February 2010 22 February 2010

Posted by admin in activity reports, Azufral, Cerro Negro (Colombia), Colombia, Cumbal, Galeras, volcano monitoring.
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Galeras volcano, 15 February 2010 (INGEOMINAS)
The summit of Galeras (image from 15 February 2010 INGEOMINAS overflight).

The INGEOMINAS volcanological observatory at Pasto has images from overflights carried out on 15 February 2010 over the volcanoes of southern Colombia: Galeras, Cumbal, Azufral and the Chiles-Cerro Negro complex (click on the name to access the images for each volcano).

Of these four, only Galeras is currently showing any signs of restlessness and is on alert level III, yellow (‘changes in the behaviour of the volcanic activity’). Cumbal and Azufral are both at alert level IV, green (‘volcano active and behaviour stable’), while Cerro Negro isn’t considered to need an alert level. Cumbal’s most recent eruptive activity was an explosive eruption in 1926, Azufral’s last known eruption was 1000 years ago, while Cerro Negro may have erupted in 1936, although this is unconfirmed.

Cerro Negro volcano, 15 February 2010 (INGEOMINAS)
Cerro Negro (image from 15 February 2010 INGEOMINAS overflight).

Cumbal volcano, 15 February 2010 (INGEOMINAS)
Summit of Cumbal volcano (image from 15 February 2010 INGEOMINAS overflight).

Azufral volcano, 15 February 2010 (INGEOMINAS)
Azufral volcano, showing Laguna Verde crater lake (image from 15 February 2010 INGEOMINAS overflight).

Information
Global Volcanism Program: Azufral – information for Azufral (1501-09=)
Global Volcanism Program: Cerro Negro de Mayasquer – information for Cerro Negro de Mayasquer (1501-11=)
Global Volcanism Program: Cumbal – information for Cumbal (1501-10=)
Global Volcanism Program: Galeras – information for Galeras (1501-08=)

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 10-16 February 2010 18 February 2010

Posted by admin in activity reports, Bagana, Bezymianny, Caribbean, Chaitén, Chile, Colombia, Dukono, Ecuador, eruptions, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karangetang, Karymsky, Kilauea, Kliuchevskoi, Llaima, Nevado del Huila, Pacaya, Papua New Guinea, Russia, Sakura-jima, Shiveluch, Soufrière Hills, Suwanose-jima, Tiatia, Tungurahua, Ulawun, United States, Weekly Volcanic Activity Reports.
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Some of the volcanic activity headlines for the past week:

  • Llaima: steam-and-gas plumes detected, alert level raised
  • Soufrière Hills: major dome collapse, resulting ash plume reaches 15.2 km altitude
  • Nevado del Huila: gas emissions and thermal anomalies detected on the lava dome
  • Tungurahua: ash plumes rose to altitudes of 5.5 to 9 km

SI/USGS Weekly Volcanic Activity Report 10-16 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 10-16 February 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), Llaima (Chile), Soufrière Hills (Montserrat), Tiatia (Russia), Ulawun (Papua New Guinea).

Ongoing activity: Bagana (Papua New Guinea), Chaitén (Chile), Dukono (Indonesia), Karangetang [Api Siau] (Indonesia), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Nevado del Huila (Colombia), Pacaya (Guatemala), Sakura-jima (Japan), Shiveluch (Russia), Suwanose-jima (Japan) | Tungurahua (Ecuador).

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SI/USGS Weekly Volcanic Activity Report 3-9 February 2010 10 February 2010

Posted by admin in activity reports, Bezymianny, Caribbean, Colombia, Dukono, Ecuador, eruptions, Fukutoku-Okanoba, Galeras, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Pacaya, Pacific, Russia, Sakura-jima, Sarychev Peak, Shiveluch, Soufrière Hills, Suwanose-jima, Tungurahua, United States, Weekly Volcanic Activity Reports.
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Some of the volcanic activity headlines this week:

  • Fukutoku-Okanoba: Surtseyan explosions from this undersea volcano
  • Pacaya: Strombolian activity reaching 30 metres above the cone
  • Kliuchevskoi: Strombolian activity projecting material up to 300 metres above the crater
  • Sakura-jima: lava fountain activity reaching up to 1 km in height, and an ash plume alive with lightning

SI/USGS Weekly Volcanic Activity Report 3-9 February 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 3-9 February 2010 has been released but is not yet available on the Global Volcanism Program website because of technical problems caused by severe weather in the eastern United States. The following is a summary and not a substitute for the full report.

UPDATE: Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 3-9 February 2010 is now available at the Global Volcanism Program website.

New activity/unrest: Bezymianny (Russia), Fukutoku-Okanoba (Japan), Pacaya (Guatemala).

Ongoing activity: Dukono (Indonesia), Galeras (Colombia), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Sakura-jima (Japan), Sarychev Peak (Russia), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan), Tungurahua (Ecuador).

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SI/USGS Weekly Volcanic Activity Report 30 December 2009-5 January 2010 9 January 2010

Posted by admin in activity reports, Africa, Barren Island, Caribbean, Chaitén, Chile, Colombia, Congo (Dem. Rep.), Costa Rica, Ecuador, eruptions, Galeras, Guatemala, Hawaii, India, Indian Ocean, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mayon, Nevado del Huila, Nyamuragira, Papua New Guinea, Philippines, Piton de la Fournaise, Rabaul, Rinjani, Russia, Sakura-jima, Sangay, Santa María, Shiveluch, Soufrière Hills, Suwanose-jima, Tungurahua, Turrialba, United States, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 30 December 2009 - 5 January 2010

Click on the map for a larger version (1280 x 898 pixels). The map title gives the end of the period covered as 6 January 2010, it should be 5 January 2010. Sorry about that.

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 30 December 2009 – 5 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: Galeras (Colombia), Mayon (Philippines), Nyamuragira (Democratic Republic of Congo), Piton de la Fournaise (Réunion), Rinjani (Indonesia), Tungurahua (Ecuador), Turrialba (Costa Rica).

Ongoing activity: Barren Island (India), Chaitén (Chile), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Nevado del Huila (Colombia), Rabaul (Papua New Guinea), Sakura-jima (Japan), Sangay (Ecuador), Santa María (Guatemala), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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The Galeras eruption of 2 January 2010 5 January 2010

Posted by admin in activity reports, Colombia, eruptions, Galeras.
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In Colombia, ever-active Galeras volcano erupted in the evening of 2 January 2010, causing ashfall nearly 40 km away and producing a plume that reached more than 12,000 metres altitude (here’s an ash advisory for the eruption issued at 02:28 UTC on 3 January 2010, reporting ash at FL400, which is 40,000 feet/12,200 metres*). No injuries were reported, and people in the neighbouring city of Pasto, where the annual Festival de Blancos y Negros is currently under way, were reported to be calm. Evacuation orders for 8000 people were in force, and around 900 seem actually to have gone to the shelters, which is a relatively good response for the area around Galeras.

Marta Calvache of INGEOMINAS confirmed in an interview with Caracol Radio that the seismic signal produced by this eruption was the largest recorded at Galeras in recent months.

The Observatorio Vulcanológico y Sismológico de Pasto reported that an explosive eruption of Galeras began at 19:43 local time on 2 January 2010. The detailed bulletin on the eruption, published by the Pasto observatory at 23:45 that night, reported that the eruption lasted 30 minutes, with the most intense phase lasting 10 minutes. Blocks and ash at high temperatures were erupted, starting fires on the forested flanks of the volcano, and ashfall was reported to the north-west of Galeras in towns up to 37 km distant. The energy level of this eruption, according to INGEOMINAS, was equivalent to that of the 17 January 2008 eruption (described by locals at the time as ‘the strongest in more than twelve years’), and was nine times greater than that estimated for the eruption of 20 November 2009. The alert level for Galeras was raised to Red during the eruption, and lowered again to Orange on the morning of 3 January.

It was a clear night in Pasto on 2/3 January 2010, so the INGEOMINAS Galeras webcam had a good view of the volcano. As a result there is a great video of the eruption as it happened, available here (MPG, 16.4 MB).

* Not sure how to make sense of a volcanic ash advisory? Click here for an explanation.

For all our Galeras coverage: Galeras « The Volcanism Blog.

News
Colombian volcano erupts, evacuation ordered – Reuters, 2 January 2010
Galeras volcano erupts – Colombia Reports, 2 January 2010
Nueva erupción del Galeras es la más grande de los últimos meses: Ingeominas – Caracol Radio, 2 January 2010
Volcán Galeras hizo erupciónEl Espectador, 2 January 2010
Erupción del volcán Galeras no dejó víctimasEl Tiempo, 3 January 2010
De roja a naranja pasa alerta por volcán GalerasEl Tiempo, 3 January 2010

Information
Global Volcanism Program – Galeras – summary information for Galeras (1501-08=)
Portal Corporativo de INGEOMINAS – Instituto Colombiano de Geología y Minería
Observatorio Vulcanológico y Sismológico de Pasto – Pasto volcanological observatory main page

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 9-15 December 2009 19 December 2009

Posted by admin in activity reports, Caribbean, Chaitén, Chile, Colombia, Concepción, Dukono, eruptions, Fuego, Galeras, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Manam, Mayon, Nevado del Huila, Nicaragua, Pacaya, Papua New Guinea, Philippines, Piton de la Fournaise, Rabaul, Russia, Sakura-jima, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 9-15 December 2009

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 9-15 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: Concepción (Nicaragua), Galeras (Colombia), Mayon (Philippines), Piton de la Fournaise (Réunion), Soufrière Hills (Montserrat).

Ongoing activity: Chaitén (Chile), Dukono (Indonesia), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Manam (Papua New Guinea), Nevado del Huila (Colombia), Pacaya (Guatemala), Rabaul (Papua New Guinea), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Russia), Suwanose-jima (Japan).

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Alert level raised to ‘orange’ at Galeras 10 December 2009

Posted by admin in activity reports, Colombia, Galeras.
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INGEOMINAS has raised the alert level at Galeras to the second-highest level of Orange, ‘eruption probable within days or weeks’, following changes in the volcano’s seismic behaviour over the past 24 hours or so. ‘Tornillo’ type earthquakes have been particularly evident, a type of seismicity that has been characteristic of the lead-up to previous eruptions. As per standard procedure, an evacuation of nearby areas has been ordered.

For all our Galeras coverage: Galeras « The Volcanism Blog.

News
Ordenan evacuar las faldas del volcán GalerasEl Pais, 10 December 2009
Authorities raise Galeras alert level to ‘orange’Colombia Reports, 10 December 2009

Information
Global Volcanism Program – Galeras – summary information for Galeras (1501-08=)
Portal Corporativo de INGEOMINAS – Instituto Colombiano de Geología y Minería
Observatorio Vulcanológico y Sismológico de Pasto – Pasto volcanological observatory main page

The Volcanism Blog