ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Thursday, August 21, 2008, 2:52 PM AKDT (Thursday, August 21, 2008, 22:52 UTC)

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

Volcanic unrest continues at Okmok Volcano. The level of seismic activity has decreased to near pre-eruption levels. Despite mostly cloudy conditions today, satellite observations show a possible thermal anomaly at the volcano.

Although the level of seismicity has declined and it appears that ash is no longer being erupted, it is possible for vigorous ash emissions to resume at any time.

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 continues. Earthquakes are being detected by the AVO seismic network on Great Sitkin Island 25 miles west of Kasatochi. Satellite views today have been obscured by clouds.

The volcano remains in a restless condition and is still considered hazardous to approach. Further explosive eruptive activity remains possible.

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 views today have been obscured by clouds and AVO has received no new information about activity at Cleveland.

Small ash bursts and low-level ash plumes may resume at the volcano. It is also possible for larger, higher reaching plumes to be produced without warning.

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

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

CONTACT INFORMATION:

John Power, Acting Scientist-in-Charge, USGS
jpower@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.

---