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AVO Archived Volcano Activity Notifications

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ARCHIVED REPORT
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KANAGA VOLCANO



Poor weather obscured Kanaga during most of the past week.

Naval weather observers in Adak reported seeing steam and

ash rising a few thousand feet above the volcano on Tuesday.

Adak residents also reported a very strong sulphur smell during the week.

No pilot reports of continuing eruptive activity at Kanaga were logged

by FAA and NWS.



VENIAMINOF



Residents of Port Heiden were able to see Veniaminof Volcano on several

days this past week. No steam or ash over the volcano was noted.



COOK INLET VOLCANOES



Seismicity at Spurr, Augustine, Redoubt and Iliamna volcanoes remains

at normal levels. AVO received several call this week regarding a

large steam plume from Iliamna. Steam emission from the vigorous summit

fumaroles at Iliamna is common and we have no reason to suspect that this

week's plume is unusual.



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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URL: avo.alaska.edu/activity/avoreport_archives.php
Page modified: May 27, 2014 10:23
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