Monday, July 17, 2017

[Geology2] UPDATED: (M4.7) western Montana



M4.7 - western Montana

Preliminary Earthquake Report
Magnitude 4.7
Date-Time
  • 17 Jul 2017 08:49:50 UTC
  • 17 Jul 2017 02:49:50 near epicenter
  • 17 Jul 2017 00:49:50 standard time in your timezone
Location 46.878N 112.538W
Depth 11 km
Distances
  • 13.8 km (8.6 mi) NW of Atlantic City (historical), Montana
  • 49.8 km (30.9 mi) NW of Helena, Montana
  • 97.2 km (60.2 mi) N of Butte, Montana
  • 108.9 km (67.5 mi) N of Butte-Silver Bow (Balance), Montana
  • 111.0 km (68.8 mi) E of Missoula, Montana
Location Uncertainty Horizontal: 0.6 km; Vertical 0.8 km
Parameters Nph = 21; Dmin = 21.5 km; Rmss = 0.20 seconds; Gp = 105°
Version = 2
Event ID mb 80232594 ***This event supersedes event US20009ww4.

For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
Montana Regional Seismic Network
Montana Bureau of Mines and Geology
http://mbmgquake.mtech.edu


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Posted by: Kim Noyes <kimnoyes@gmail.com>



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