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Volcano Activity Notifications
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Report Text
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ALASKA VOLCANO OBSERVATORY INFORMATION STATEMENT
Thursday, July 9, 2009 1:46 PM AKDT (Thursday, July 9, 2009 2146 UTC)


Redoubt Volcano
60°29'7" N 152°44'38" W, Summit Elevation 10197 ft (3108 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

As of today, July 9, AVO is standing down from 24/7 staffing of its operations center. AVO will have someone on duty in the office from 6 am to 9 pm seven days a week, but a staff scientist may not be in the operations center to immediately answer phone calls. At times we may not respond to inquiries as quickly as we have over the past several months, but will return phone calls or requests for information as soon as possible.

It is still possible for conditions at the volcano to change rapidly and seismic activity or other signs of unrest could escalate over time periods as short as 24 hours or less. The lava dome in the summit crater has not yet fully stabilized and may completely or partially collapse with little or no advance warning. A significant dome collapse would likely result in the production of hazardous ash clouds, possibly to aircraft flight levels, hot block and ash flows, and flooding in the Drift River valley. AVO will monitor for such activity on a 24/7 basis using alarms that send notifications to on call staff who will be able to respond quickly. AVO scientists will continue to examine monitoring data regularly and report on activity through our daily status reports and weekly updates.

AVO staff can be contacted by calling 907-786-7497. If no one answers at this number, calls will be forwarded to an answering service that will put you in contact with an AVO scientist. Usually, someone from AVO is able to respond to such calls within 10 minutes.


CONTACT INFORMATION:
Tom Murray, Scientist-in-Charge, USGS
tlmurray@usgs.gov (907) 786-7497

Jessica Larsen, Acting Coordinating Scientist, UAF
faust@gi.alaska.edu (907) 322-4085

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].
URL: avo.alaska.edu/activity/avoreport.php
Page modified: October 23, 2013 13:13
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