ASSOCIATED PRESS In this photo provided by Mike Tickle, the Pavlof Volcano emits a minor steam and ash plume, as seen Tuesday, May 14, 2013, from the community of Cold Bay, Alaska. The Alaska Volcano Observatory said satellite images show a small lava flow down a flank of the Volcano, located 625 miles southwest of Anchorage. (AP Photo/Mike Tickle)
ASSOCIATED PRESS A photo made by Brandon Wilson and provided by the Alaska Volcano Observatory shows steam and the fresh lava flow on the north side of the volcano late Monday, May 13, 2013 in Alaska. Pavlof is the second Alaska volcano to erupt this month. (AP Photo/Brandon Wilson)
ASSOCIATED PRESS In this photo provided by the Alaskan Volcano Observatory, the Pavlof volcano erupts Thursday, May 16, 2013, as seen from the air from the southwest in Cold Bay, Alaska. Lava fountaining is visible near the summit, and steam and ash clouds rise from the northwest flank where a lava flow advances down the slope. (AP Photo/Alaskan Volcano Observatory, Rachel Kremer)
ANCHORAGE, Alaska >> 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. The cloud was moving to the southeast.
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.
Residents of Cold Bay, 37 miles away, have reported seeing a glow from the summit.
Pavlof is among the most active volcanoes in the Aleutian arc, with nearly 40 known eruptions, according to the observatory.