ANCHORAGE, Alaska — An ash cloud from a remote Alaska volcano rose to 37,000 feet and stretched more than 400 miles wide over a rural part of the state Monday.
The Pavlof Volcano erupted Sunday, causing tremors on the ground, the U.S. Geological Survey said. The volcano is 625 miles southwest of Anchorage on the Alaska Peninsula, the finger of land that sticks out from mainland Alaska toward the Aleutian Islands.
Alaska State Troopers could not immediately say if any injuries were reported.
— Colt Snapp (@Colt_Snapp) March 28, 2016
The USGS has raised the volcano alert to its highest level, which warns of hazards both in the air and on the ground. An image of the volcano posted on the Alaska Volcano Observatory website showed a thick streak of light grey ash arcing out of the peak and streaming sideways across the sky.
The closest community is Cold Bay, about 37 miles southwest of the volcano.
The volcano, which is about 4.4 miles in diameter, has had 40 known eruptions and is one of the most consistently active volcanoes in the Aleutian arc, the agency said.
During a previous eruption in 2013, ash plumes rose 27,000 feet, according to the USGS. Other eruptions have generated ash plumes as high as 49,000 feet.