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LEVEL OF CONCERN COLOR CODE: ORANGE
LAST LEVEL OF CONCERN: RED
The intense seismicity that began about 0600 UTC (about 10:00 pm ADT) last night has ceased and seismicity has returned to the previous level. The specific nature of the intense activity of last night is unknown at this time. Lava fountaining in the crater continues. The current activity is such that ash clouds could be produced but would not exceed 25,000 feet above sea level and would disperse less than several 100 km downwind to the east at this time. The weather in the area is poor and the volcano is mostly obscured by clouds. No visual or satellite observations of an ash cloud have been reported. 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.