Earthquake Hazards Program

Skip to main content

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 home page. FirstGov button U.S. Department of the Interior | U.S. Geological Survey
    URL: http://eqweb-menlo.wr.usgs.gov/eqcenter/eqinthenews/2005/usevax/index.php
    Page Contact Information: Web Team
    Page Last Modified: March 20, 2007 3:55:04 PM.