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AVO VOLCANO ACTIVITY NOTIFICATION

ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Saturday, February 28, 2009, 11:25 AM AKST (Saturday, February 28, 2009, 20:25 UTC)


REDOUBT VOLCANO (VNUM #313030)
60°29'7" N 152°44'38" W, Summit Elevation 10197 ft (3108 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Unrest at Redoubt Volcano continues. No eruption has occurred.

Seismicity is currently dominated by small discrete earthquakes; tremor has diminished significantly in the past two days. There have not been any significant earthquake swarms in the past 24 hours.

Ice obscures much of the view of Redoubt in the Hut web cam this morning. Nothing unusual has been observed in satellite views over the past day.

Yesterday, a field crew installed a time-lapse camera in the Drift River valley, and two campaign GPS sites. Data from yesterday's gas-measurement flight are being processed. Observers on the flight reported continued subsidence of the upper Drift glacier. They also had good views of the debris flow that was emplaced Thursday evening, and that is visible in HutCam views. It emanated from a crevasse in the ice below the 1990 dome and flowed down the surface of the glacier to about 3000' above sea level.

No field work at the volcano is planned this weekend.

AVO continues to monitor Redoubt Volcano closely, and the observatory is staffed 24 hours a day.


CLEVELAND VOLCANO (VNUM #311240)
52°49'20" N 169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

AVO has received no reports of activity at Cleveland in the past 24 hours. Nothing unusual has been observed in mostly to partly cloudy satellite images over the past day. Low-level ash emissions may occur with little or no warning.

VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu

RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478

CONTACT INFORMATION:

Tom Murray, Scientist-in-Charge, USGS
tlmurray@usgs.gov (907) 786-7497

Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 474-7131

The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.
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