Printer friendly versionALASKA VOLCANO OBSERVATORY WEEKLY UPDATEFriday, December 18, 2009 11:59 AM AKST (Friday, December 18, 2009 20:59 UTC)
On Saturday, Dec. 12, a weak ash cloud was emitted from Cleveland Volcano. The plume was detected retrospectively in a MODIS Terra satellite image. No further activity has been detected.
Because there are no volcanoes at elevated color codes or alert levels, AVO has suspended its daily reporting procedures and is not issuing its usual daily status reports.
MONITORED ALASKAN VOLCANOES
Seismic activity is monitored in real time at 27 volcanoes in Alaska. Satellite images of all Alaskan volcanoes are analyzed daily for evidence of ash plumes and elevated surface temperatures. Some volcanoes may currently display anomalous behavior but are not considered to be at a dangerous level of unrest. Akutan, Augustine, Dutton, Fisher, Gareloi, Great Sitkin, Griggs, Iliamna, Isanotski, Kanaga, Katmai, Mageik, Makushin, Martin, Novarupta, Okmok, Pavlof, Redoubt, Shishaldin, Snowy, Spurr, Tanaga, Trident, Ugashik-Peulik, Ukinrek Maars, Westdahl, and Wrangell volcanoes are in color code GREEN
and volcano alert level Normal. All are at or near normal levels of background seismicity.
Please see http://www.avo.alaska.edu/color_codes.php
for complete definitions of Aviation color codes and Volcano alert levels.
VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu
RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478
Michelle Coombs, Acting Scientist-in-Charge, USGS
email@example.com (907) 786-7497
Ken Dean, Acting Coordinating Scientist, UAF
firstname.lastname@example.org (907) 474-7364
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.