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Lava fountain, ash cloud erupt from Alaska volcano

Theo Chesley / Alaskan Volcano Observatory via AP

The Pavlof volcano erupts on May 16, 2013, as seen from the air from the southwest in Cold Bay, Alaska.

Rachel Kremer / Alaskan Volcano Observatory via AP

Lava fountaining is visible near the summit of the Pavlof Volcano on May 16, 2013, and steam and ash clouds rise from the northwest flank where a lava flow advances down the slope.

A remote Alaska volcano continues to erupt, spewing lava and ash clouds.

The Alaska Volcano Observatory said Thursday a continuous cloud of ash, steam and gas from Pavlof Volcano has been seen 20,000 feet above sea level.

John Power, the U.S. Geological Survey scientist in charge at the observatory, estimates the lava fountain rose several hundred feet into the air.

Onsite seismic instruments are picking up constant tremors from the eruption at Pavlof, located about 625 miles southwest of Anchorage. Read the full story.