USGS - science for a changing world

Earthquake Hazards Program

 

Magnitude 4.5 - WESTERN MONTANA - usevax

2005 October 31 00:23:30 UTC

A light earthquake occurred at 00:23:30 (UTC) on Monday, October 31, 2005. The magnitude 4.5 event has been located in WESTERN MONTANA. (This event has been reviewed by a seismologist.)

Earthquake Details

Magnitude 4.5
Date-Time
  • Monday, October 31, 2005 at 00:23:30 (UTC)
    = Coordinated Universal Time
  • Sunday, October 30, 2005 at 5:23:30 PM
    = local time at epicenter
    • Time of Earthquake in other Time Zones
    Location 44.889°N, 113.422°W
    Depth 5 km (3.1 miles) set by location program
    Region WESTERN MONTANA
    Distances
  • 24 km (15 miles) NNW (348°) from Leadore, ID
  • 50 km (31 miles) SE (130°) from Salmon, ID
  • 71 km (44 miles) WNW (294°) from Lima, MT
  • 265 km (165 miles) ENE (57°) from Boise, ID
  • 476 km (296 miles) NNW (345°) from Salt Lake City, UT
    		•
    Location Uncertainty horizontal +/- 4.1 km (2.5 miles); depth fixed by location program
    Parameters Nst= 37, Nph= 37, Dmin=45.6 km, Rmss=0.61 sec, Gp= 61°,
    M-type=teleseismic moment magnitude (Mw), Version=R
    Source USGS NEIC (WDCS-D)
    Event ID usevax
    • Preliminary Earthquake Report
    • U.S. Geological Survey, National Earthquake Information Center
      World Data Center for Seismology, Denver

    Accessibility FOIA Privacy Policies and Notices

    Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
    URL: http://earthquake.usgs.gov/eqcenter/eqinthenews/2005/usevax/index.php
    Page Contact Information: EHP Web Team
    Page Last Modified: July 16, 2008 20:03:30 UTC