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AVO VOLCANO ACTIVITY NOTIFICATION

ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Tuesday, August 12, 2008, 1:22 PM AKDT (Tuesday, August 12, 2008, 21:22 UTC)


KASATOCHI VOLCANO (VNUM #311130)
52°10'9" N 175°30'41" W, Summit Elevation 1030 ft (314 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Seismic activity at Kasatochi is still being detected by the AVO seismic network on nearby Great Sitkin Island. No ash emissions have been observed in satellite data for several days and AVO has received no pilot reports of ash clouds.





Because Kasatochi lacks a seismic network, it may be difficult to determine if or when ash emissions may resume and the volcano remains in a hazardous state. It is possible for explosive activity to resume with little or no warning.


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

Satellite data from this morning indicate that Cleveland volcano erupted a small ash plume to about 25,000 feet. As of about 11:00 AM AKDT the plume had drifted southwest about 60 miles (100 km) and appears to be dissipating. A pilot in the region reported no obvious ash emissions at the volcano at about 10:00 AM AKDT this morning.


OKMOK VOLCANO (VNUM #311290)
53°23'49" N 168°9'58" W, Summit Elevation 3520 ft (1073 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Eruptive activity continues at Okmok Volcano. The intensity of activity has been variable over the past day. No ash clouds have been observed in satellite data, but a pilot report this morning indicated an ash plume to 15,000 feet. An observer in Nikolski, west of the volcano, also reported seeing an ash plume above the volcano yesterday.



Minor ash fall may occur over parts of Umnak Island.

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

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

CONTACT INFORMATION:

Chris Waythomas, Acting Scientist-in-Charge, USGS
chris@usgs.gov, (907)786-7497

Jon Dehn, Acting Coordinating Scientist, UAFGI
dehn@gi.alaska.edu (907) 474-6499



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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