The Latest: Alaska volcano erupts; ash trace reaches city

ANCHORAGE, Alaska (AP) — The Latest on the eruption of an Alaska volcano (all times local):

7:45 a.m.

Trace amounts of ash and the smell of sulfur reached an Alaska city after the latest eruption of a volcano in the Aleutian Islands.

Bogoslof (BOH-gohs-lawf) Volcano erupted late Monday night. The ash cloud reached 25,000 feet high and the Alaska Volcano Observatory raised the aviation code to the highest warning level.

Traces of ash reached the city of Unalaska (un-ah-LAH-ska) about 61 miles southeast of the volcano. Ash in larger amounts can be a health risk and can damage equipment.

The observatory says the volcano was quieting down Tuesday. By 7:30 a.m., strong explosive activity had subsided or ended and the observatory was not detecting infrasound signals or lightning related to strong ash emissions.

Bogoslof has erupted more than 25 times since mid-December.

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11:40 p.m.

An aviation code has been raised to the highest "warning level" following a volcanic eruption in Alaska's Aleutian Islands region.

The Alaska Volcano Observatory says the Bogoslof (BOH-gohs-lawf) Volcano sent an ash cloud an estimated 20,000 feet into the air late Monday.

The National Weather Service issues alerts to traffic controllers after significant eruptions.

'The volcano 850 miles southwest of Anchorage has erupted more than two dozen times since mid-December.