Printer friendly version
ALASKA VOLCANO OBSERVATORY
Friday, September 07, 2001 10:30 AM ADT (1830 UTC)
Seismic activity is monitored in real time at 22 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 without being considered to be at a dangerous level of unrest.
Frosty Volcano: AVO received several reports this summer of suspected activity at Frosty Volcano west of Cold Bay, AK. On August 28, AVO scientists working in the Cold Bay area made an overflight of the volcano and observed nothing unusual and no indication of recent volcanic unrest. Low snow levels on the volcano exposed the summit for the first time in recent memory. This may have aided the formation of small rockfall avalanches from the summit area that could be mistaken as signs of volcanic unrest. At this time AVO has no reason to suspect renewed activity at Frosty Volcano, a volcano that has had no known eruptions in the past 200 years.
Spurr, Redoubt, Iliamna, Augustine, Snowy, Griggs, Katmai, Novarupta, Trident, Mageik, Martin, Aniakchak, Pavlof, Dutton, Isanotski, Shishaldin, Fisher, Westdahl, Akutan, Makushin, Great Sitkin, and Kanaga volcanoes are all at or near normal levels of background seismicity. AVO did not detect ash plumes or significant elevated surface temperatures in the vicinity of any volcano.