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AVO Archived Volcano Activity Notifications

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ARCHIVED REPORT
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VENIAMINOF



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.



SEGUAM



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.

VOLCANO ALERT LEVELS
NORMAL
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
ADVISORY
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
WATCH
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway but poses limited hazards.
WARNING
Hazardous eruption is imminent, underway, or suspected.

AVIATION COLOR CODES
GREEN
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
YELLOW
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
RED
Eruption is imminent with significant emission of volcanic ash into the atmosphere likely OR eruption is underway or suspected with significant emission of volcanic ash into the atmosphere [ash-plume height specified, if possible].

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Page modified: May 27, 2014 10:23
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