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AVO VOLCANO ACTIVITY NOTIFICATION

ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Monday, May 11, 2009, 1:56 PM AKDT (Monday, May 11, 2009, 21:56 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

The 2009 eruption of Redoubt continues. Seismicity at the volcano remains elevated, but has been slightly less intense than a few days ago when renewed explosive activity appeared imminent. Vigorous steam emissions around the margin of the lava dome are visible in web camera images today as are occasional small rock avalanches from the flanks of the lava dome. Rock avalanche activity may produce low level diffuse ash clouds that linger in the vicinity of the volcano summit, but otherwise disperse rapidly in the wind. The steam plume may contain minor amounts of ash near the volcano, but no ash has been detected in satellite or radar data.

The present lull in seismic activity may or may not be significant, and it is possible for earthquake activity to increase to higher levels at any moment. The lava dome continues to grow and remains in an unstable condition, and may collapse at any time especially if the effusion of lava into the core of the dome increases.

AVO is monitoring Redoubt volcano closely and the observatory is staffed 24/7. AVO will provide frequent updates of the volcano's status and the earliest possible warning of significant explosive activity and other hazardous phenomena.


VENIAMINOF VOLCANO (VNUM #312070)
56°11'52" N 159°23'35" W, Summit Elevation 8225 ft (2507 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Seismicity at Veniaminof remains elevated. AVO continues to observe small earthquakes and volcanic tremor located near the intra-caldera cone. These signals are seen across the seismic network. No unusual activity was observed through partly cloudy satellite views.





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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