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AVO VOLCANO ACTIVITY NOTIFICATION

ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Wednesday, July 23, 2008, 12:28 PM AKDT (Wednesday, July 23, 2008, 20:28 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

The eruption of Okmok Volcano continues. The character of seismicity has changed in the last 12 hours from episodic, high-amplitude pulses to nearly continuous, mid-level volcanic tremor. Recent satellite data continue to show older plumes drifting away from Okmok toward the E/SE. Weather clouds have prevented unobscured views of the volcano over the last 10 hours.

Stronger explosive activity could resume at any time with little or no warning.


Please see http://www.avo.alaska.edu/activity/Okmok.php for more information.



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

Thick clouds have obscured satellite views of Cleveland for the last 10 hours. No plumes have been visible in satellite data since 16:00 AKDT yesterday (midnight UTC). Satellite data from early yesterday evening continue to show strong thermal anomalies near Cleveland's summit. These data strongly suggest the presence of lava at Cleveland.

Please see http://www.avo.alaska.edu/activity/Cleveland.php for more information.





CONTACT INFORMATION:

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

Steve McNutt, Coordinating Scientist, UAFGI
steve@giseis.alaska.edu (907)978-5458

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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URL: avo.alaska.edu/activity/report.php
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