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AVO Archived Volcano Activity Notifications

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ARCHIVED REPORT
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MOUNT VENIAMINOF



An observer from Port Heiden (40 km west of the volcano) reported sighting small, dark plumes from Veniaminof on the 17 of April, 1995. Observers from Perryville, Alaska (20 km south of the volcano) report that Veniaminof volcano has been producing a small steam plume over the past several days. This information coincides with reported warm spots seen on satellite images taken on April 14 and 21, 1995. Veniaminof volcano has been experiencing low levels of eruptive activity for more than a year and a half. Steam clouds from melting ice and snow caused by contact with warm lava and occasional low-energy, ash bursts from the intercaldera cone have been common.



COOK INLET VOLCANOES



Seismic activity 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 nonbusiness 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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