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AVO VOLCANO ACTIVITY NOTIFICATION

ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Thursday, July 2, 2009, 1:05 PM AKDT (Thursday, July 2, 2009, 21:05 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

No significant change has been observed at Redoubt over the last 24 hours. Seismicity at the volcano continues at slightly above background. Web camera views this morning are obscured by clouds.

Data from yesterday's gas-measurement flight are still being processed, but preliminary results indicate that emissions of both SO2 and CO2 are down from the last measurement on June 11.

Earlier this week, AVO lowered the Aviation Color Code to Yellow and the Alert Level to Advisory at Redoubt volcano based on a significant decrease in the rate of lava extrusion observed over the past several weeks. It is unknown if this represents the end of the 2009 eruption of Redoubt or if the activity has only paused temporarily and might resume in the next months. The large dome is considered potentially unstable and it could collapse with little to no warning, leading to significant ash production and possible lahars in the Drift River valley.

AVO will continue to monitor Redoubt's activity closely, but begin to transition off 24/7 staffing.


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 received no reports of activity at Cleveland during the past 24 hours. Recent satellite views of the volcano have been obscured by clouds.





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

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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