Printer friendly versionALASKA VOLCANO OBSERVATORY
Friday, October 5, 2007 11:30 AM AKDT (1930 UTC)
55°24'57" N161°53'24" W, Summit Elevation 8261 ft (2518 m)
Current Aviation Color Code: GREEN
Current Volcano Alert Level: Normal
The current eruption at Pavlof ended on September 13 and no lava or ash emission has occurred since that time. AVO is lowering the aviation color code and volcano alert level to GREEN and NORMAL.
Seismicity is at background levels. Satellite images and web camera views of the volcano show no evidence of continuing ash or lava emission.
Rockfalls and small avalanches of debris on the southeast flank of the volcano may continue intermittently. Drainages leading away from the south flank of Pavlof are susceptible to small lahars or mudflows as long as hot material remains high on the slopes of the volcano where it could mix with ice and snow.
Pavlof has, in past eruptions, resumed eruptive activity after pauses as long as 55 days, and AVO continues to monitor the volcano closely for signs of renewed activity. We expect hours to days of increased seismicity prior to a return to eruption. See www.avo.alaska.edu for the most up to date information on Pavlof and other Alaskan volcanoes.
Pavlof volcano is located on the southwestern end of the Alaska Peninsula. Pavlof is a stratovolcano which rises to an elevation of 8262 feet. With almost 40 historic eruptions, it is one of the most consistently active volcanos in the Aleutian arc. Eruptive activity is generally characterized by sporadic strombolian fountaining continuing for a several-month period.
VOLCANO ALERT LEVELS:
NORMAL Typical background activity of a volcano in a non-eruptive state
ADVISORY Elevated unrest above known background activity
WATCH Volcano is exhibiting heightened or escalating unrest with increased potential for eruptive activity
WARNING Highly hazardous eruption underway or imminent
ABBREVIATED AVIATION COLOR CODE KEY:
GREEN volcano is dormant; normal seismicity and fumarolic activity occurring
YELLOW volcano is restless; eruption may occur
ORANGE volcano is in eruption or eruption may occur at any time
RED significant eruption is occurring or explosive eruption expected at any time
Please see http://volcanoes.usgs.gov/2006/vhpalertlevel.pdf for a complete description of alert levels and color codes.
VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu
RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478
Tom Murray Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
Steve McNutt, Coordinating Scientist, UAF
email@example.com (907) 474-7131
The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.