Home > Natural Disasters > Alaska: Alert Level Raised for Volcano in Aleutian Islands After Authorities Spot ‘Persistent Thermal Anomalies’

Alaska: Alert Level Raised for Volcano in Aleutian Islands After Authorities Spot ‘Persistent Thermal Anomalies’


ANCHORAGE, Alaska — The alert level for an Alaska volcano is being raised after officials say persistent thermal anomalies have been spotted in satellite data.

The Alaska Volcano Observatory on Wednesday raised the level Cleveland Volcano to advisory from unassigned.

There is no real-time seismic network at the volcano, located 939 miles southwest of Anchorage on an uninhabited island. Officials are not able to track local earthquake activity related to volcanic unrest.

Short-lived explosions with ash clouds or plumes exceeding 20,000 feet above sea level are frequent on Cleveland. It last showed signs of unrest last summer, with a small ash emission and lava flows on its upper flanks.” Read more.

July 16: Magnitude 6.1 earthquake shakes Alaska’s Aleutian Islands – “A 6.1 magnitude earthquake has struck Alaska’s Aleutian Islands, but no tsunami warning was issued. According to the U.S. Geological Survey, the quake on Saturday was centered 604 miles southwest of Anchorage on the eastern part of the Aleutian Islands. It had a depth of 43 kilometers.” Read more.

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