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Mt. Cleveland is a 5,675-foot-tall (1,730 m) stratovolcano on the west side of Chuginadak Island. Chuginadak volcano and an unnamed volcano form the east side of the island. Mt. Cleveland is almost perfectly symmetrical and 5 miles (8 km) wide at its base. It is also one of the most active volcanoes in the Aleutians. While a small number of soldiers were stationed on the island, one was killed during an eruption in June of 1944. A brief eruption in May of 1994 sent ash to 10.5 km. This photograph shows a small steam plume above Mt. Cleveland.
On 19 March, an explosive eruption occurred at Cleveland. The National Weather Service estimated the top of the ash cloud was 30,000 ft. ASL.
This information was summarized from Smithsonian Institution's Preliminary Notices of Volcanic Activity.
Following the eruption on 11 March, a strong thermal anomaly has been dectected and indicates continued unrest at the Cleveland volcano. Further explosive activity could occur at any time.
This information was summarized from Smithsonian Institution's Preliminary Notices of Volcanic Activity.
An eruption on 11 March was recorded on AVO satellite imagery. The eruption lasted approximately 3 hours. The eruptions at Mt. Cleveland are generally short-lived explosive bursts of ash, sometimes accompanied by lava fountaining and lava flows down the flanks.
This information was summarized from Smithsonian Institution's Preliminary Notices of Volcanic Activity.
On 19 February, the Cleveland volcano erupted explosively. Satellite imagery shows a large thermal anomaly. Further explosive eruptions could occur with little warning. The Cleveland volcano is not seismically monitored and it is not assigned a level of concern color code. Chuginadak Island is remote and uninhabited.
This information was summarized from Smithsonian Institution's Preliminary Notices of Volcanic Activity.
Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, AZ, 349 p.
Wood, C.A., and Kienle, J., 1990, Volcanoes of North America: United States and Canada: Cambridge University Press, New York, NY, 354 p.
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