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The level of seismicity beneath Mt. Spurr remains low and
has not changed significantly during the past week. The
current level of concern color code 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.
OTHER COOK INLET VOLCANOES
Seismicity at Augustine and Redoubt volcanoes remains at
The Alaska Volcano Observatory continues to monitor Spurr, Augustine, and Redoubt volcanoes closely. We maintain a computerized alarm system that is capable of notifying AVO seismologists during non-business hours should unusual seismic activity occur.