...Geological and Geophysical Surveys.The observatory has no real-time seismic equipment on Cleveland. Pressure sensors on Okmok Volcano -74 miles away- have in the past detected a pressure wave from an explosion, Waythomas said."We have a couple...

...advisory was to remain in effect until midnight Sunday. It was issued as a result of continued eruptions from the Okmok Volcano, which began erupting July 12 and is located about 65 miles southwest of Dutch Harbor. Seismic activity at Okmok...

ANCHORAGE - The Okmok Volcano in the Aleutian Islands quieted some on Sunday, one day after a...issue the red alert warning pilots in the area to be wary. The Okmok Volcano spit massive geysers of water, gas and debris 25,000 feet into...

...are reporting surface ash extending up to 50 miles southeast of the volcano. Cleveland is about 90 miles west of the Okmok Volcano, which continues to erupt. Okmok's ash plume on Monday was nearly 20,000 feet, down significantly from the 30...