US: Alaska Aleutian Islands volcano erupts again, spews ash

A volcano in Alaska's Aleutian Islands has sent up another ash cloud that could threaten aircraft, the Alaska Volcano Observatory announced. Shishaldin Volcano erupted at 5 a.m. Tuesday, said Hans Schwaiger, a geophysicist with the US Geological Survey, one of the agencies that make up the observatory. Elevated surface temperatures indicated active lava at the vent in the volcano summit, the observatory said. The observatory first detected increased seismic activity at the volcano. When clouds parted, a satellite recorded images of an ash cloud to 7,010m and a plume that led back to the vent, Schwaiger said, meaning the eruption had continued after 5 a.m. Wind blew the ash cloud northeast into the Bering Sea and north of the route used by jets flying between North America and Asia. The National Weather Service issued an ash cloud warning for aircraft to 7,315m.<br/>