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SI/USGS Weekly Volcanic Activity Report, 29 September – 5 October 2010 7 October 2010

Posted by admin in activity reports, Bagana, Batu Tara, Caribbean, Chile, Colombia, Dukono, Ecuador, eruptions, Fuego, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mexico, Nevado del Huila, Nevado del Ruiz, Pacaya, Papua New Guinea, Piton de la Fournaise, Planchón-Peteroa, Popocatépetl, Reventador, Russia, Sakura-jima, Sarychev Peak, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Weekly Volcanic Activity Reports.
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The Weekly Volcanic Activity Report for 29 September to 5 October 2010 is compiled by Sally Kuhn Kennert and published by the Global Volcanism Program. Some selected highlights:

  • Nevado del Huila: ash emissions reported at an altitude of 7.6 km
  • Nevado del Ruiz: increased seismicity, deformation and geochemical changes causing concern
  • Kilauea: a new breakout lava flow causes fires
  • Sarychev Peak: a diffuse ash plume reported

SI/USGS Weekly Volcanic Activity Report 29 September - 5 October 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 29 September – 5 October 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: Nevado del Huila (Colombia), Nevado del Ruiz (Colombia), Piton de la Fournaise (Réunion Island), Planchón-Peteroa (Chile), Reventador (Ecuador).

Ongoing activity: Bagana (Papua New Guinea), Batu Tara (Indonesia), Dukono (Indonesia), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Pacaya (Guatemala), Popocatépetl (Mexico), Sakura-jima (Japan), Sarychev Peak (Russia), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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SI/USGS Weekly Volcanic Activity Report 8-14 September 2010 16 September 2010

Posted by admin in activity reports, Alaska, Arenal, Batu Tara, Caribbean, Chile, Cleveland, Colombia, Costa Rica, Dukono, Ecuador, Ekarma, eruptions, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Nevado del Huila, Planchón-Peteroa, Reventador, Russia, Sakura-jima, Sangay, Santa María, Shiveluch, Sinabung, Soufrière Hills, Suwanose-jima, United States, Weekly Volcanic Activity Reports.
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The Global Volcanism Program has put together a bumper Weekly Volcanic Activity Report for 8-14 September 2010. Sally Kuhn Kennert of the GVP compiled the report. Some highlights:

  • Nevado del Huila: alert level raised following increase in seismicity and gas/ash emissions
  • Soufrière Hills: several small-to-moderate pyroclastic flows descended the dome and took parts of it down with them
  • Arenal: rumbled its way through August with gas emissions, strombolian eruptions and avalanches
  • Sinabung: threw ash plumes up to 4.3-4.6 km altitude

SI/USGS Weekly Volcanic Activity Report 8-14 September 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 8-14 September 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: Cleveland (Alaska, USA), Ekarma (Russia), Kliuchevskoi (Russia), Nevado del Huila (Colombia), Planchón-Peteroa (Chile), Santa María (Guatemala), Sinabung (Indonesia).

Ongoing activity: Arenal (Costa Rica), Batu Tara (Indonesia), Dukono (Indonesia), Karymsky (Russia), Kilauea (Hawaii USA), Reventador (Ecuador), Sakura-jima (Japan), Sangay (Ecuador), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

Note: a.s.l. = ‘above sea level’.

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Colombian volcano update: Galeras, Huila, Machín 15 September 2010

Posted by admin in activity reports, Colombia, Galeras, Machín, Nevado del Huila.
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Galeras erupted on 25 August: the Colombian geological authority INGEOMINAS described the eruption as ‘of low explosivity’. Ashfall was reported up to 30 km NW of the volcano, and an evacuation order was issued affecting about 7000 people (although as usual few people heeded the evacuation) there were no casualties and no reports of damage. The alert level was raised to the highest level of Red on 25 August and lowered to Orange on the following day. Tremors continued for 12 hours following the eruption before gradually declining. Evidence gathered during an overflight by INGEOMINAS on 26 August suggested that a new crater had been opened by the eruption on Galeras’s north flank. On 7 September INGEOMINAS lowered the alert level to Yellow, at which level Galeras remains. The latest bulletin (14 September) reports a low level of seismic activity and minor gas-and-ash emissions. There have been some signs of deformation since 9 September at the summit of the volcano.

Nevado del Huila has a tendency to produce sulphur dioxide emissions, and SO2 plumes from the volcano have been detected frequently since the middle of June. The level of seismicity and its intensity increased, with a greater number of shallow hybrid earthquakes beneath the main summit (Pico Central). Because of this change in Huila’s seismic behaviour, INGEOMINAS raised the alert level for the volcano from Yellow to the second-highest level of Orange on 15 June. Low-level activity continued during June, July and August, with SO2 emissions, fluctuating seismicity and small ash emissions being reported. The alert level was returned to Yellow on 6 July and remained at that level until 9 September, when a marked increase in volcanic tremor and emissions/incandescence at the summit (‘very recurrent and energetic pulses of tremor, associated with pulsing surface emissions of gas, ashes and incandescent material’) prompted INGEOMINAS to raise the alert level to Orange. The Colombian authorities have advised local residents to leave the area, and municipalities around the volcano have been making emergency preparations. The most recent bulletin of 14 September reports continuing high levels of seismicity with pulses of tremor associated with emissions of gas, ash and incandescent material, whitish-blue and grey emissions columns reaching up to 2 kilometres above the summit, and high concentrations of SO2. Nevado del Huila remains on Orange alert, ‘eruption probable within days or weeks’.

Machín experienced a volcanic-tectonic earthquake of magnitude 2.6 at 3.87 km depth yesterday, which was felt by residents in nearby towns. Seismic unrest was noted at Machín earlier this summer: on 24 July INGEOMINAS reported a ‘seismic crisis’ characterized by an increase in relatively shallow volcanic-tectonic earthquakes.  Machín has been on Yellow alert for a long time, and remains at that level.

Information
Global Volcanism Program: Galeras – summary information for Galeras (1501-08=)
Global Volcanism Program: Nevado del Huila – summary information for Nevado del Huila (1501-05=)
Global Volcanism Program: Machín – summary information for Machín (1501-04=)
Instituto Colombiano de Geología y Minería – main page for INGEOMINAS

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SI/USGS Weekly Volcanic Activity Report 25-31 August 2010 1 September 2010

Posted by admin in activity reports, Alaska, Batu Tara, Caribbean, Cleveland, Colombia, Dukono, Ecuador, Ekarma, eruptions, Galeras, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Manam, Nevado del Huila, Papua New Guinea, Reventador, Russia, Sakura-jima, Sangay, Shiveluch, Sinabung, Soufrière Hills, Suwanose-jima, United States, Weekly Volcanic Activity Reports.
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Some highlights from a very full week of volcanic activity as reported by the Global Volcanism Program (report compiled by Sally Kuhn Sennert):

  • Ekarma: a steam plume and evidence of a possible recent small eruption reported from this volcano in the Kuril Islands
  • Galeras: an eruption on 25 August, and ashfall up to 30 km from the vent
  • Sinabung: two significant eruptions cause the evacuation of 20,000 to 30,000 local residents
  • Nevado del Huila: ash emissions accompanied by tremor

SI/USGS Weekly Volcanic Activity Report 25-31 August 2010

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 25-31 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: Ekarma (Russia), Galeras (Colombia), Manam (Papua New Guinea), Sinabung (Indonesia).

Ongoing activity: Batu Tara (Indonesia), Cleveland (Alaska, USA), Dukono (Indonesia), Karymsky (Russia), Kilauea (Hawaii USA), Kliuchevskoi (Russia), Nevado del Huila (Colombia), Reventador (Ecuador), Sakura-jima (Japan), Sangay (Ecuador), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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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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

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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 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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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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SI/USGS Weekly Volcanic Activity Report 25 November – 1 December 2009 3 December 2009

Posted by admin in activity reports, Caribbean, Chaitén, Chile, Colombia, Dukono, Ecuador, eruptions, Fuego, Galeras, Gaua, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karkar, Karymsky, Kilauea, Kliuchevskoi, Nevado del Huila, Pacific, Papua New Guinea, Rabaul, Russia, Sakura-jima, Sangay, Sarychev Peak, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Vanuatu.
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SI/USGS Weekly Volcanic Activity Report 25 November - 1 December 2009

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 25 November – 1 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: Galeras (Colombia), Gaua (Vanuatu), Karkar (Papua New Guinea), Sarychev Peak (Russia).

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

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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

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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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