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LEVEL OF CONCERN COLOR CODE: RED
LAST LEVEL OF CONCERN: ORANGE
Seismic activity increased substantially during the day and at 2:50 pm reached a level that may indicate ejection of ash to altitudes above 25,000 feet ASL. The Level of Concern Color Code is upgraded to RED. The volcano is currently obscured by bad weather, however, AVO received an observation reporting an ash plume up to about 15,000 feet ASL at 1 pm. AVO will continue to monitor the volcano closely and issue further updates as the situation warrants.
The nearest towns to the volcano are Cold Bay (37 mi),
King Cove (30 mi), Sand Point (60 mi), and Nelson Lagoon
(50 mi); these towns could expect light ash fall depending
on wind direction and continuing eruptive activity.
Eruptive activity could cause mudflows and some flooding in the Cathedral River valley north of the volcano. Airborne ash hazards to aircraft may be considerable if a large
explosive event occurs but much less severe during a typical Strombolian phase.
AVO has a seismic network of six stations near the volcano.