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Mount Cleveland, in the central Aleutian Island, ejected a single burst of ash on Wednesday afternoon. Pilots reported an ash cloud rising to 35,000 ft ASL. National Weather Service satellite imagery showed that the cloud was small and drifted northeast over the Bering Sea. A vigorous steam plume has been observed at the volcano during the past month. See the May 25 AVO Information Release for more information on Mount Cleveland.
On Monday a possible eruption of Shishaldin was reported, but further analysis revealed the cause to be meteorological phenomena. Shishaldin is one of the most active volcanoes in the Aleutian arc and continuously emits a low-level steam plume.
Inclement weather prevented ground observers from viewing the volcano this week.
Residents in Perryville reported that last Friday afternoon, a large steam plume was visible rising from Veniaminof. Incliment weather prevented observations of any eruptive activity at the volcano this week.
COOK INLET VOLCANOES
Seismicity at Spurr, Augustine, Redoubt and Iliamna
volcanoes remains at normal levels.
The Alaska Volcano Observatory continues to seismically
monitor Spurr, Augustine, Redoubt and Iliamna volcanoes. We
maintain a computerized alarm system that is capable of
notifying AVO seismologists during non business hours should
unusual seismic activity occur.