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Poor weather continued over the Alaska Peninsula for much of this week, hampering pilot observations of Veniaminof Volcano. During a few periods of good visibility on Tuesday, an observer in Port Heiden located 60 miles NE of the volcano saw no activity over the summit crater. AVO received the last report of eruptive activity at Veniaminof on August 12.
AVO has received no new information about activity at Seguam Volcano in the central Aleutians. The last report of an eruption was on August 12. Poor weather and limited air traffic combine to make tracking of activity at this remote island volcano difficult.
COOK INLET VOLCANOES
Cook Inlet Volcanoes. Seismicity beneath Mt. Spurr remains low. The current Level of Concern Color Code for Mt. Spurr is GREEN. Steam and ash explosions could still occur at Crater Peak with little if any advance warning. Such explosions are unlikely to pose a hazard to high-flying aircraft or to communities downwind. AVO continues to recommend that climbers, hikers, and other interested parties stay out of the crater until further notice.
Seismicity at Augustine, Redoubt and Iliamna Volcanoes remains at normal levels.
The Alaska Volcano Observatory continues to monitor Spurr, Augustine, Redoubt and Iliamna volcanoes closely. AVO maintains a computerized alarm system that is capable of notifying AVO seismologists should unusual seismic activity occur during non-business hours.