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ARCHIVED REPORT
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ALASKA VOLCANO OBSERVATORY


Information Release


Wednesday, September 5, 2007 1:30 PM AKDT (2130 UTC)




ALASKA VOLCANO OBSERVATORY

Information Release

Wednesday, September 5, 2007 2:00 PM AKDT (2200 UTC)



THIS IS A TEST! NOT AN ACTUAL EVENT.



This Information Release is being disseminated as part of a test of the Alaska Interagency volcanic ash warning and advisory procedures and communications. Products being disseminated in addition to this AVO Information Release include the following test products that will be issued by the National Weather Service:



Test UUA by the Center Weather Service Unit (CWSU).

Test Sigmet by the Alaska Aviation Weather Unit (AAWU).

Test Graphical Meteorological Impact Statement (MIS) by the CWSU.

Test Volcanic Ash Advisory (VAA) by the AAWU.

Cancellation for the Test Sigmet by the AAWU.

Cancellation for the Test VAA by the AAWU.



If you (a) did not receive all of the products you NORMALLY receive or wish to receive, (b) if the receipt of products was significantly delayed (compare time of issue with time it was received), or (c) received a product you do not want to receive, please notify AVO by e-mail or phone.







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



CONTACT INFORMATION:

Tom Murray Scientist-in-Charge, USGS

tlmurray@usgs.gov (907) 786-7497



Steve McNutt, Coordinating Scientist, UAF

steve@giseis.alaska.edu (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.



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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