Monitors detect small explosion at Alaska volcano
{{#rendered}} {{/rendered}}Scientists say there's been a small explosion at a remote Alaska volcano.
The Alaska Volcano Observatory says the explosion happened just after 7 p.m. Wednesday at Cleveland Volcano. The observatory says in a statement that it was detected by distant seismic stations and infrasound array since there's no nearby seismic network.
Cloud cover prevented visual observation or satellite imagery of the eruption.
{{#rendered}} {{/rendered}}Officials said this was similar to eruptions in December, when small ash clouds dissipated quickly and didn't affect air traffic.
Cleveland is a 5,675-foot peak on an uninhabited island 940 miles southwest of Anchorage.
Authorities say sudden eruptions could occur at any time, and ash clouds 20,000 feet above sea level are possible.