Mt. Spurr's 1992 eruptions


  • Alaska Volcano Observatory

    1. U.S. Geological Survey, 4200 University Dr., Anchorage, AK 99508
    2. Geophysical Institute, University of Alaska, Fairbanks, AK 99775
    3. Alaska Division of Geological and Geophysical Surveys, 794 University Ave., Suite 200, Fairbanks, AK 99709
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On June 27, 1992, the Crater Peak vent on the south side of Mt. Spurr awoke from 39 years of dormancy and burst into subplinian eruption after 10 months of elevated seismicity. Two more eruptions followed in August and September. The volcano lies 125-km west of Anchorage, which is Alaska's largest city and an important international hub for air travel. The Alaska Volcano Observatory (AVO) was able to warn communities and the aviation industry well in advance of these eruptions.