Earthquake Report

Magnitude: 2.4
Thu August 9, 2012 07:33AM (PDT)
Event Id: 60451516
Version #5: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 2.4 Ml
Time: Thu August 9, 2012 07:33AM (PDT)
Thu August 9, 2012 14:33 (UTC)
Distance From: 25.7 km ( 16.0 mi) NW ( 309. azimuth) from Longview, WA
50.1 km ( 31.1 mi) ENE ( 77. azimuth) from Astoria, OR
51.5 km ( 32.0 mi) SSW ( 201. azimuth) from Centralia, WA
Coordinates: 46.283, -123.2
Depth: 48.41 Km (29.53 miles)
Location Quality: Excellent
Event Id: 60451516
Horizontal Uncertainty: 0.42 Km
Depth Uncertainty: 0.7 Km
Azimuthal Gap: 52.0 deg
Number of Phases: 50
RMS Misfit: 0.18

Historic Activity

Historic_map_icon

Focal Mechanism

More Information

Solution 1

Uw60451516.uwfm1
Number of P First Motions: 38
Plane A Plane B Uncertainty
Strike 25º 146º 15.0º
Dip 70º 36º 13.0º
Rake -60º -144º 25.0º

Discrepant Stations

Station Network Channel Polarity Quality
SHW UW EHZ D 0.92
SUG CC EHZ D 0.92
GLK UW EHZ D 0.92
STOR UW BHZ D 0.92
SEP CC EHZ D 0.92
60451516