Aleutians volcano sends up ash cloud Friday; aircraft warned

An Alaska volcano that has been erupting periodically since mid-December has sent up another ash cloud.
The Alaska Volcano Observatory says Bogoslof Volcano in the Aleutian lslands erupted at 1:17 p.m. Friday.
Pilots report an ash cloud reached 36,000 feet. Ash clouds higher than 20,000 feet are a threat to intercontinental jet aircraft because ash can damage engines.
The aviation color code remains at red, the highest threat warning.
The observatory says prevailing winds pushed the cloud southe