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Growing Alaskan Lava Dome Could Lead to Volcanic Blast August 19, 2011
Cleveland Volcano
The lava dome of Cleveland volcano was growing when this photo of the summit was taken on Aug. 8, 2011.
Alaska’s Cleveland volcano was put on orange alert status after satellite observations indicated magma was pushing up the lava dome, possibly leading to an explosive eruption.

The dome at the summit has been expanding in diameter over much of the summer.

Should Cleveland send an ash cloud soaring above the Aleutian Islands, as it has in the past, key trans-Pacific air routes could be affected.

The volcano covers about half of the uninhabited Chuginadak Island.

The nearest community is Nikolski, an Aleut village with a population of 20, located 45 miles to the east.

Photo: Kim Yano - NOAA