Cleveland Volcano was removed Monday from code yellow status, more than two weeks after it spewed an ash plume up to 20,000 feet.
The Oct. 2 eruption prompted the Alaska Volcano Observatory to raise the threat level for the volcano to code orange.
The ash cloud drifted northeast about 375 miles and dispersed over the Bering Sea.
Cleveland is about 940 miles southwest of Anchorage, on a remote and uninhabited island in the Aleutian chain.
The observatory said the last significant eruption of the 5,676-foot volcano began in February 2001 and eventually produced a lava flow that reached the ocean.
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