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ALASKA VOLCANO OBSERVATORY INFORMATION STATEMENT
U.S. Geological Survey
Friday, November 30, 2018, 10:46 AM AKST (Friday, November 30, 2018, 19:46 UTC)


The large earthquake with a preliminary magnitude of M7.0 that occurred this morning at 8:29 AKST north of Anchorage was tectonic in nature and not related to volcanism. For more information on the earthquake, see the NEIC website: https://earthquake.usgs.gov/

AVO has offices in Anchorage and Fairbanks, Alaska. The Fairbanks office is unaffected and continues to monitor Alaska’s volcanoes. The Anchorage facility has power and limited communications. Essential monitoring personnel continue to staff the Anchorage office. Ground-based monitoring data from our Veniaminof, Aniakchak, Okmok, and Korovin networks is currently unavailable following the earthquake; but we continue to monitor those volcanoes using satellite and infrasound data. Veniaminof remains at ORANGE/WATCH, Cleveland, Semisopochnoi, and Great Sitkin remain at YELLOW/ADVISORY. For updated information on Alaska volcanoes, visit https://avo.alaska.edu


OTHER ALASKA VOLCANOES

Information on all Alaska volcanoes is available at : http://www.avo.alaska.edu.

For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://www.avo.alaska.edu/color_codes.php

SUBSCRIBE TO VOLCANO ALERT MESSAGES by email: http://volcanoes.usgs.gov/vns/

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CONTACT INFORMATION:

Dave Schneider, Acting Scientist-in-Charge, USGS
djschneider@usgs.gov (907) 786-7497

Jessica Larsen, Acting Coordinating Scientist, UAFGI
jflarsen@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].
Contact AVO Privacy Accessibility Information Quality FOIA
URL: avo.alaska.edu/activity/avoreport.php
Page modified: February 17, 2017 10:11
Contact Information: AVO Web Team

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