A news release dated Tuesday, July 26, 2005 at 04:08:35 UTC states:
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.(Just in case you live in the region and thought something seemed funky just about then but you couldn't put your finger on what it was...)
Items knocked off shelves at Dillon and Bozeman. Felt (VI) at Dillon and Twin Bridges; (IV) at Bozeman, Butte, Helena, Missoula and West Yellowstone; (III) at Billings, Great Falls, Kalispell and Livingston. Felt (IV) at Island Park and Salmon; (III) at Coeur d'Alene, McCall, Moscow, Rexburg and Sandpoint, Idaho. Also felt (III) at Pullman and Spokane, Washington and in Yellowstone National Park, Wyoming. The quake was felt as far away as Seattle, Washington and Calgary, Alberta.