ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Tuesday, August 18, 2009, 1:53 PM AKDT (Tuesday, August 18, 2009, 21:53 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. Intermittent webcam views show continued steaming from the dome, although today's webcam images are obscured. The cooling lava 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.

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 unrest, who then can respond accordingly.

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

Recent favorable satellite images continued to show elevated temperatures near the summit of Shishaldin; however, seismic, deformation, and gas emission data do not show anything abnormal at the volcano, and there is currently no indication that an eruption will occur. The Shishaldin webcam is operational again, and may show periodic steaming from the summit, which is typical behavior for this volcano. AVO will continue to closely monitor activity at Shishaldin.



CONTACT INFORMATION:

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

Jessica Larsen, Acting Coordinating Scientist, UAF
faust@gi.alaska.edu (907) 322-4085

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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