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ARCHIVED REPORT
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PAVLOF VOLCANO



LEVEL OF CONCERN COLOR CODE: ORANGE

LAST LEVEL OF CONCERN: ORANGE



Eruptive activity continues at Pavlof Volcano. Seismicity, satellite imagery and recent visual observations indicate ongoing lava fountaining from two vents near the summit of the volcano. Intermittent bursts of lava to heights of less than 1000 feet above the crater persist. These bursts result in a diffuse ash layer that pilots report to be typically below 20,000 feet ASL. Two lava flows extend down the steep, snow-and ice-covered north slope of the volcano. Weather conditions currently prevent direct observation of the volcano. Based on the level of seismicity and the nature of this current eruption, lava fountaining, lava flows, and localized, diffuse ash clouds are likely to continue for weeks or months. The level of Concern Color Code will remain at ORANGE and AVO will continue to monitor the volcano closely.



Pavlof is located 600 miles southwest of Anchorage. The

nearest towns to the volcano are Cold Bay (37 mi SW), King

Cove (30 mi SW), Sand Point (60 mi E), and Nelson Lagoon

(50 mi NE). These towns could expect light ash fall

depending on wind direction and level of eruptive

activity. Mudflows and some flooding could occur near the

volcano. The hazard to aircraft from airborne ash may be

considerable if a large explosive event occurs, however

during the more typical lava fountaining activity at

present, this hazard is minor.

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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