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ARCHIVED REPORT
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VENIAMINOF



Eruptive activity continues to be observed at Veniaminof Volcano. This morning, a resident of Port Heiden observed eruptions of ash and steam occurring at the volcano at 3-4 minute intervals. These small plumes were reaching only a few hundred feet over the summit of the volcano which suggests that the vigor of the eruption has diminished somewhat from earlier this week. There have been no additional reports of ashfall at any nearby villages.



Observations of the activity at Veniaminof indicate that the current eruption is Strombolian in nature (characterized by intermittent bursts of molten material several hundred feet above the vent) similar to previous historic eruptions such as the 1983-84 event. As this activity continues, occasional ash falls are possible at Perryville and other nearby villages. Pilots should be aware of possible ash clouds at elevations generally not exceeding 20,000 feet above sea level.



SEGUAM



AVO has received no additional reports of activity at Seguam Volcano. However, the weather has been poor in the area and few sitings of the volcano have been possible. The U.S. Coast Guard will attempt to overfly the volcano later today.

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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