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SI/USGS Weekly Volcanic Activity Report, 28 January 2009 – 3 February 2009 5 February 2009

Posted by admin in activity reports, Asama, Barren Island, Chaitén, eruptions, Fuego, Karymsky, Kilauea, Kliuchevskoi, Pacaya, Rabaul, Redoubt, Sakura-jima, Santa María, Shiveluch, Soufrière Hills, Tungurahua, Ubinas, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 28 January 2009 - 3 February 2009

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report covering 28 January 2009 to 3 February 2009 is now available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity: Asama (Japan), Redoubt (Alaska, USA).
Ongong activity: Barren Island (Andaman Islands), Chaitén (Chile), Fuego (Guatemala), Karymsky (Kamchatka, Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Kamchatka, Russia), Pacaya (Guatemala), Rabaul (Papua New Guinea), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Kamchatka, Russia), Soufrière Hills (Montserrat), Tungurahua (Ecuador), Ubinas (Peru).


Asama (Japan): 21 Jan 09, thin ash blanket observed on NW crater rim; 1 Feb 09, increased seismicity and ground deformation detected; 2 Feb 09, eruption produced ash plume to 3-4.6km a.s.l. which drifted SE.

Redoubt (Alaska, USA): 27 Jan 09 -3 Feb 09, elevated seismicity; 27 Jan 09, muddy meltwater discharge observed below summit crater; 29 Jan 09, possible diffuse ash plume identified on satellite imagery; 30 Jan 09, increased fumarolic activity, enlargement of melt features and runoff observed; 31 Jan 09 – 2 Feb 09, steam plumes rising above summit intermittently observed.


Barren Island (Andaman Islands): 31 Jan 09, ash plume drifted 55km SE.

Chaitén (Chile): 28 Jan 09 – 2 Feb 09, active lava dome (‘Domo Nuevo 2’) continued to grow and produced block-and-ash flows; 28 Jan 09, dense ash plume rose 500m above the dome and was followed by a block-and-ash flow to the W.

Fuego (Guatemala): 30 Jan 09 and 3 Feb 09, multiple explosions (some with rumbling sounds and shockwaves) produced grey ash plumes to 4.1-4.7km a.s.l. and drifted S and SE, fumarolic plumes rose 100m above crater; 30 Jan 09, incandescent material ejected 50-100m above the crater.

Karymsky (Kamchatka, Russia): 23-30 Jan 09, seismic activity at background levels; 23 and 24 Jan 09, weak thermal anomaly detected.

Kilauea (Hawaii, USA): 28 Jan 09 – 3 Feb 09, lava flowed through tubes SE to the ocean; 28 Jan 09, explosions observed at ocean entry; incandescence and thermal anomalies suggesting surface flows observed; Halemauma vent continued producing white plume drifting SW, incandescence intermittently seen at the vent.

Kliuchevskoi (Kamchatka, Russia): 22-24 Jan 09 and 28 Jan 09, seismicity at background levels; 25-27 Jan 09, seismicity above background levels; diffuse gas-and-steam plumes noted; weak daily thermal anomaly observed at the crater.

Pacaya (Guatemala): 30 Jan 09 and 3 Feb 09, white and blue fumarolic plumes from MacKenney cone drifted S and W at low altitude, 75-100m lava flow descended SW flank.

Rabaul (Papua New Guinea): 28-30 Jan 09, ash plumes from Tavurvur cone rose to 1.8-4.3km a.s.l. and drifted ESE andSE.

Sakura-jima (Japan): 28 Jan 09 and 1-3 Feb 09, explosions and eruptions produced ash plumes to 1.8-3.4km a.s.l., drifted SE, S and SW.

Santa María (Guatemala): 30 Jan 09 and 3 Feb 09, fumarolic plumes to 100m above Santaguito lava dome complex, explosions produced plumes to 2.6-3.2km a.s.l., drifted W, SW and S; periodically incandescent avalanches descended S and W flanks of Caliente lava dome.

Shiveluch (Russia, Kamchatka): 22-30 Jan 09, seismic activity above background levels; 22 Jan 09, ash plumes to 7km a.s.l. and to 4km a.s.l. on other days in reporting period; 23-24 and 26-27 Jan 09, weak gas-and-steam activity; large daily thermal anomaly noted over lava dome.

Soufrière Hills (Montserrat): 23-30 Jan 09, low seismicity, minimal rockfalls, no lava dome incandescence.

Tungurahua (Ecuador): 27 Jan 09 – 2 Feb 09, ash-and-steam and ash plumes drifted NE, S and SW; crater incandescence and occasional roaring noted; 30 Jan 09 and 1-2 Feb 09, ashfall reported on SW flank.

Ubinas (Peru): 31 Jan 09, ash plume to 6.7km a.s.l. and drifted SW.


The foregoing is a summary of the Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report covering 28 January 2009 to 3 February 2009. It is provided for information only, and is based on but not a substitute for the full report, which comes with its own criteria and disclaimers. The map base is derived from the Smithsonian Institution/USGS/US Naval Research Laboratory This Dynamic Planet website.

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1. Pat James - 16 June 2009

The last time I remember June being so messed up and cold was the year Mt Pinatubo erupted.

Has there been any big eruptions or has the overall level of activity been noticably higher than during a typical year?

It’s probably just a normal fluctuation but I was curious since the year of Pinatubo, summer was really late and noticably off.


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