BONNER COUNTY HISTORICAL SOCIETY & MUSEUM
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Volcanic Ash
On May 18, 1980, an earthquake struck below the north face of Mount St. Helens in Washington state, triggering the largest landslide in recorded history and a major volcanic eruption that scattered ash across a dozen states. The sudden lateral blast—heard hundreds of miles away—removed 1,300 feet off the top of the volcano, sending shock-waves and pyroclastic flows across the surrounding landscape, flattening forests, melting snow and ice, and generating massive mudflows. A total of 57 people lost their lives in the disaster. This anniversary hits home for many locals who have vivid memories of  the approaching ash cloud, the bizarre dark skies at daytime, the uncertain fears of inhaling the ash, deserted streets, and closed schools.  This container of ash was swept up from the ash cloud that descended on Bonner County.  

Donor: Roy D. Alexander
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  • About
    • Mission
    • Donors & Sponsors
    • Board & Staff
  • Visit
  • Exhibits
  • Programs
    • Signature Events
    • Education Programs >
      • School Tours
      • Traveling Trunks
      • At Home with BCHS >
        • Young Explorers (0-10)
        • At Home Historians (11 and up)
      • Project-Based Learning
    • Oral Histories >
      • Submit Your Story
    • Historic Driving Tour
    • Historic Walking Tour
  • Collections
    • Connecting the Past to the Present >
      • Publications
    • Podcast: North Idaho Nuggets
    • Object Identification
    • Newspapers of Bonner County
    • Special Collections
    • Collection Based Research
    • Historic Preservation
  • Support
    • Membership
    • Sponsorship
    • Volunteer
    • Shop Museum Guild
    • Donate an Artifact