Redoubt Volcano Alaska

[link to eruptions.wordpress.com]

The Alaska Volcano Observatory has put Redoubt on orange alert for aviation and suggest that an eruption could occur with “hours to days”. The most recent update from AVO says that a recent overflight of the volcano done this afternoon shows no evidence that an eruption has started, but steam and sulfur output has increased. Meanwhile, seismicity at the volcano is also well above background. In all, it sounds like the Aleutians might have yet another volcano erupting if these signs continue.



[link to www.avo.alaska.edu]

ORANGE/WATCH 2009-01-26 13:02:21 - Status Report
Unrest at Redoubt Volcano continues. Seismicity at stations closest to the volcano's summit has declined somewhat starting at about 4:00 AKT this morning, but remains well above background levels.

Nothing unusual has been seen over the past 24 hours in clear to partly cloudy satellite views. AVO conducted an overflight of the volcano yesterday afternoon, and observations confirm that an eruption has not occurred. Increased steaming through previously observed sources in the snow and ice cover were seen and sulfur gas emissions were noted. There was no significant disruption of the glacial ice, nor any apparent increased water discharge down the Drift River. A gas-measurement flight to the volcano is underway today.

The current activity at Redoubt could be precursory to an eruption, perhaps within days. A further increase in seismicity is expected to accompany an eruption. Staff are currently monitoring the volcano 24 hours a day.

Beginning at 00:58 AST (9:58 UTC) yesterday morning, nearly continuous volcanic tremor was recorded at stations near Redoubt's summit, prompting AVO to raise the Aviation Color Code to ORANGE and the Alert Level to WATCH at 02:09 AST (11:09 UTC).