Magnitude 4.5 - WESTERN MONTANA

2007 May 08 15:46:49 UTC

Earthquake Details

Magnitude	4.5
Date-Time	Tuesday, May 08, 2007 at 15:46:49 UTC Tuesday, May 08, 2007 at 09:46:49 AM at epicenter Time of Earthquake in other Time Zones
Location	45.394°N, 112.130°W
Depth	13.5 km (8.4 miles) set by location program
Region	WESTERN MONTANA
Distances	8 km (5 miles) NNW (347°) from Alder, MT 9 km (5 miles) SE (143°) from Sheridan, MT 18 km (12 miles) NW (307°) from Virginia City, MT 381 km (237 miles) ENE (57°) from Boise, ID 516 km (321 miles) N (358°) from Salt Lake City, UT
Location Uncertainty	Error estimate not available
Parameters	Nst=117, Nph=117, Dmin=36.7 km, Rmss=0 sec, Gp= 22°, M-type=teleseismic moment magnitude (Mw), Version=U
Source	Montana Bureau of Mines and Geology, Butte, USA
Event ID	us2007ccay

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Earthquake Summary

The following is a release by the United States Geological Survey, National Earthquake Information Center: An earthquake occurred 60 km (35 miles) NE of Dillon, Montana at 9:46 AM MDT, May 8, 2007 (8:46 AM PDT in Us). The magnitude and location may be revised when additional data and further analysis results are available. There have been no reports of damage.

Felt Reports

MD 4.7 (BUT). Several buildings slightly damaged at Sheridan. Felt (V) at Sheridan and Twin Bridges; (IV) at Dillon, Norris and Virginia City; (III) at Anaconda, Bozeman, Butte, Clancy, Corvallis, Deer Lodge, Divide, Ennis, Gallatin Gateway, Hamilton, Helena, Manhattan, Missoula, Salmon, Stevensville, Three Forks, Victor and Whitehall; (II) at Boise, Florence and Great Falls. Felt at Belgrade, Big Timber, Billings, Boulder, Cardwell, Cascade, Darby, East Helena, Elk City, Fort Benton, Gardiner, Garrison, Helmville, Leadore, Lewistown, Lincoln, Lolo, Moscow, North Fork, Philipsburg, Pony, Radersburg, Silverstar, Sula and Warm Springs. Also felt at Pullman, Washington.

Earthquake Information for Montana