Ashes from volcanoes adversely impact a plane's engines and may even shut them down completely. Ash from southwest Alaska volcanos is a threat for airliners operating between North America and Asia when a cloud rises above 20,000 feet. Ash cloud drifting NW. So far, however, there are no reports of any flight delays from the eruption.
Volcano eruptions have wreaked havoc on air travel in the past, not to mention caused significant environmental impact.
There have been eight documented eruption events at Bogoslof, the most recent one in 1992. However, this sustained activity for the last half year has puzzled many in the scientific community. The event lasted around 50 minutes.
The cloud from the eruption reached at least 35,000 ft., and possibly as high as 45,000 ft., the Observatory said.
A code red aviation alert was issued after the eruption, but was brought back down to orange later on Sunday. It is so small and the volcano so active that sensitive instruments used by researchers to monitor volcanic rumblings can not be placed there, posing unique challenges for researchers trying to track its activity, according to Michelle Coombs, a scientist with the US Geological Survey's Alaska Volcano Observatory in Anchorage. "Activity may ramp back up with additional explosions producing high-altitude volcanic clouds with little precursory activity".