ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Thursday, August 20, 2009, 1:15 PM AKDT (Thursday, August 20, 2009, 21:15 UTC)

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

Seismic activity at Redoubt remains low. Webcam views show continued steaming from the lava dome. The cooling dome remains potentially unstable, and could collapse with little or no warning, likely resulting in significant ash production, hot block and ash flows, and flooding in the Drift River valley.

Three field crews are out at Redoubt today, studying recent deposits, observing current activity, and measuring gas emissions.

Although the operations center is not staffed 24/7, AVO continues to monitor the volcano on a 24/7 basis using an alarm system that alerts on-call staff of potential unrest.

SHISHALDIN VOLCANO (VNUM #311360)
54°45'19" N 163°58'16" W, Summit Elevation 9373 ft (2857 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Satellite and webcam images of Shishaldin have been obscured by clouds over the last 24 hours. Seismic activity remains low, and deformation and gas emission data do not show anything abnormal at the volcano. There is currently no indication that an eruption will occur. AVO will continue to closely monitor activity at Shishaldin.



CONTACT INFORMATION:

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

Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 978-5458

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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