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The Alaska Volcano Observatory (AVO) is a joint program of the United States Geological Survey (USGS), the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS).
Restless Volcanoes
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Kasatochi volcano:
Aviation Color Code - ORANGE
Volcano Alert Level - WATCH
Full details on this episode of unrest

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Cleveland volcano:
Aviation Color Code - YELLOW
Volcano Alert Level - ADVISORY
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Okmok volcano:
Aviation Color Code - YELLOW
Volcano Alert Level - ADVISORY
Full details on this episode of unrest

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AVO/USGS Volcanic Activity Notice

Volcano: Okmok

Current Volcano Alert Level: ADVISORY

Current Aviation Color Code: YELLOW

Issued: Wednesday, August 27, 2008, 1:53 PM AKDT (20080827/2153Z)
Source: Alaska Volcano Observatory
Notice Number: 2008/A28
Location: N 53 deg 23 min W 168 deg 9 min
Elevation: 3520 ft (1073 m)
Area: Aleutians Alaska

Volcanic Activity Summary: Seismicity at Okmok Volcano has been steadily declining for the past eight days and significant ash plumes have not been observed since August 19. Therefore AVO is lowering the aviation color code from Orange to Yellow and the Alert Level from Watch to Advisory.

Remarks: Visual observations of the caldera floor made on August 23 indicate that low level eruptive activity has also likely stopped. It is possible for vigorous ash emissions to resume at any time.

Contacts: John Power, Acting Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497

Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 474-7131

Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http://www.avo.alaska.edu

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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Contact Information: AVO Web Team