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AVO Archived Volcano Activity Notifications

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ARCHIVED REPORT
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VENIAMINOF



Observers in Perryvill report low level steam and ash emission from Veniaminof today. Snow on the upper south flank in gray, indicating a light ash cover. Satellite imagery recorded a hot spot at the volcano on August 10.



KANAGA VOLCANO



U.S. Fish and Wildlife staff onboard a research vessel in late July reported seeing a blocky lava flow that was entering the sea on the northwest flank. The flow was forming a new headland and small cove. On August 10, the same ship passed within 2 miles of shore and the crew observed for the first time during daylight hours the two lava flows on the northwest flank. Steam was rising from where the flows were entering the sea. A strong odor of SO2 was detected. Satellite imagery recorded hot spots at Kanaga all this week.



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 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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