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Earthquake Hazards Program

News Release

Magnitude 5.6 WESTERN MONTANA
Tuesday, July 26, 2005 at 04:08:37 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

The following is a release by the United States Geological Survey, National Earthquake Information Center: A moderate earthquake occurred IN WESTERN MONTANA, about 20 km (15 miles) north-northeast of Dillon or about 65 km (40 miles) south of Butte at 10:08 PM MDT, Jul 25, 2005 (10:08 PM MDT in Montana). The magnitude and location may be revised when additional data and further analysis results are available. The earthquake was felt in large parts of Montana. It was also felt in Idaho and Wyoming. No reports of damage have been received at this time.

Minor damage (VI) at Dillon, Silver Star and Twin Bridges. Felt (V) at Gold Creek, Sheridan, Virginia City and Wisdom; (IV) at Anaconda, Boulder, Bozeman, Butte, Cascade, Clancy, Clinton, Corvallis, Darby, Deer Lodge, East Helena, Ennis, Florence, Gallatin Gateway, Gardiner, Garrison, Helena, Lolo, Manhattan, Missoula, Seeley Lake, Stevensville, Victor, West Yellowstone and Whitehall; (III) at Billings, Great Falls, Hamilton, Kalispell and Livingston. Felt (V) at Leadore; (IV) at Island Park, North Fork and Salmon; (III) at Challis, Coeur d'Alene, McCall, Moscow and Sandpoint, Idaho. Also felt (IV) in Yellowstone National Park, Wyoming and (III) at Spokane, Washington. Felt as far as Denver, Colorado; Seattle, Washington and Calgary, Alberta.

 


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