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ARCHIVED REPORT
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KANAGA VOLCANO



Low-level steam and ash eruptions continue at Kanaga Volcano in the Aleutian Islands. On Thursday, US Fish and Wildlife personnel in Adak observed and photographed a gray ash cloud erupting from the summit crater of Kanaga Volcano. The cloud did not rise much above the summit of the volcano and strong winds carried the plume in a southwesterly direction. For the remainder of the week, weather clouds obscured the volcano. No pilot reports of continuing eruptive activity at Kanaga were logged

by FAA and NWS.



VENIAMINOF



Residents of Perryville and pilots overflying Veniaminof during the past week reported occasionally vigorous steam plumes emanating from near the intracaldera cinder cone. AVO recieved no reports, however, of continuing ash eruption or lava flow activity.



COOK INLET VOLCANOES



Seismicity at Spurr, Augustine, Redoubt and Iliamna volcanoes remains at normal levels.



The Alaska Volcano Observatory continues to seismically monitor Spurr, Augustine, Redoubt and Iliamna volcanoes. We maintain a computerized alarm system that is capable of notifying AVO seismologists during non business hours should unusual seismic activity occur.



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].

PDF version of these definitions
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Page modified: May 27, 2014 10:23
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