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The Alaska Volcano Observatory (AVO) is a joint program of the United States Geological Survey (USGS), the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS).
RESTLESS VOLCANOES
Cleveland
Color Code YELLOW / Alert Level ADVISORYvolcano image
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Shishaldin
Color Code ORANGE / Alert Level WATCHvolcano image
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NEWS
Happy Anniversary, Shishaldin 1967 and 2014!
Posted: January 28, 2015

Shishaldin in June, 2014
Today is a double anniversary of eruptions at one of Alaska’s most active and beautiful volcanoes: Shishaldin.
One year ago, the current period of unrest and low-level Strombolian eruption deep within the summit crater commenced. The first sign of activity was an increased surface temperature detected from satellite. The 2014-2015 eruption has been monitored primarily using AVO’s satellite image tracking system, as the seismic network at Shishaldin has been hampered by technical problems for a portion of this period. AVO also uses a web camera and infrasound detection and ground coupled air waves – essentially the detection of pressure waves in the atmosphere produced by explosions at the volcano – to evaluate and track ongoing activity. The current eruption has not had much impact on the surrounding terrain or air traffic. Localized dustings of ash and ballistics on the flank of Shishaldin attest to the vigor of some of the explosions during the last year. As occurred in 1999, however, Shishaldin is capable of significant explosions that send ash high into the atmosphere, and for that reason AVO remains vigilant for intensification of the activity.

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LAST ACTIVITY REPORT
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ALASKA VOLCANO OBSERVATORY DAILY UPDATE
Saturday, January 31, 2015 12:01 PM AKST (Saturday, January 31, 2015 21:01 UTC)


SHISHALDIN VOLCANO (VNUM #311360)
54°45'19" N 163°58'16" W, Summit Elevation 9373 ft (2857 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Nothing observed in satellite data over the past 24 hours. Clear web camera views from yesterday afternoon and this morning showed only minor steaming from the summit. Seismicity remains above background levels. Low-level eruptive activity within the summit crater of the volcano may be continuing, but appears to be waning.


CLEVELAND VOLCANO (VNUM #311240)
52°49'20" N 169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Nothing of note has been observed in satellite data over the past 24 hours. No significant activity has been detected in seismic or infrasound (air pressure) data.

OTHER ALASKA VOLCANOES

Other Alaska volcanoes show no signs of significant unrest: http://www.avo.alaska.edu/activity/

AVO scientists conduct daily checks of earthquake activity at all seismically-monitored volcanoes, examine web camera and satellite images for evidence of airborne ash and elevated surface temperatures, and consult other monitoring data as needed.

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

FOR MORE INFORMATION ON ALASKA VOLCANOES: http://www.avo.alaska.edu

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

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CONTACT INFORMATION:
John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497

Jeff Freymueller, Coordinating Scientist, UAFGI
jeff.freymueller@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.
NEWS

IS ASH FALLING?

RUSSIAN VOLCANO INFORMATION

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URL: www.avo.alaska.edu/index.php
Page modified: November 15, 2014 16:35
Contact Information: AVO Web Team

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