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Pilots reported low-level emission of steam and ash from Kanaga, with local ashfall on its flanks. A plume extending to the southwest was detected on satellite imagery earlier in the week.
COOK INLET VOLCANOES
Seismic activity beneath Mt. Spurr remains low. The current
Level of Concern Color Code is GREEN.
Since late 1992, the level of seismicity at Spurr volcano and the Crater Peak vent has steadily declined and is now at background levels. Therefore, we will discontinue specific mention of Spurr in our weekly updates beginning next week. The danger of sudden explosions from the Crater Peak vent, while still present, is diminished. Frequent rockfalls, unstable ground, and volcanic gases continue to pose a hazard within the vent. Seismic monitoring of Spurr volcano will continue.
Seismicity at Augustine, Redoubt and Iliamna volcanoes
remains at normal levels.
The Alaska Volcano Observatory continues to monitor Spurr,
Augustine, Redoubt and Iliamna closely. We maintain a
computerized alarm system that is capable of notifying AVO
seismologists during nonbusiness hours should unusual
seismic activity occur.