Alaska volcano erupts again; aviation alert raised to red

Alaska Volcano Observatory operations centre
Dave Schneider at the Alaska Volcano Observatory operations centre in Anchorage Alaska
Author

30 May, 2017

A volcanic eruption on Alaska's Bogoslof Island on Sunday provoked a temporary raising of the highest aircraft alert, the Alaska Volcano Observatory (AVO) announced on Sunday.

A huge volcanic eruption took place in Alaska's Bogoslof Island that has issued high alert level.

"We actually went to colour code red this afternoon because of numerous lightning detections and increased seismic signals", Jeffrey Freymueller of the Geophysical Institute at the University of Alaska, Fairbanks tells CNN.

The volcanic eruption may cause flights between Asia and North America to be delayed or even canceled for several days. "Lightning in the Aleutians is mostly due to volcanic plumes, as the meteorological conditions for lightning are not common".

Alaska's Bogoslof volcano "belched" an ash cloud 35,000ft (10,668 meters) into the atmosphere over a period of just 55 minutes. Ash cloud drifting NW. Images from the Japanese Himawari satellite shared by the National Weather Service Ocean Prediction Center show the ash cloud clearly.

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An onlooker from Unalaska Island reported seeing a large white-gray mushroom cloud form over Bogoslof, with ash falling out to the west.

According to the AVO, no further ash emissions have occurred since the explosion.

Scientists will continue to monitor the unpredictable volcano for ash-producing eruptions, which could happen at any time without warning signs.

According to the AVO, the stratovolcano isn't monitored by a real-time seismic network, which limits the ability to detect activity that could lead to an explosive eruption.


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