Earthquake Report

Magnitude: 0.7
Thu August 9, 2012 08:11:53 PM (PDT)
Event Id: 60438187
Version #5: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 0.7 Md
Time: Thu August 9, 2012 08:11:53 PM (PDT)
Fri August 10, 2012 03:11:53 (UTC)
Distance From: 42.7 km ( 26.5 mi) ESE ( 106. azimuth) from Longview, WA
57.3 km ( 35.6 mi) NNE ( 16. azimuth) from Portland, OR
59.7 km ( 37.1 mi) S ( 190. azimuth) from Morton, WA
Coordinates: 46.03, -122.411
Depth: 15.92 Km (9.71 miles)
Location Quality: Excellent
Event Id: 60438187
Horizontal Uncertainty: 0.36 Km
Depth Uncertainty: 0.43 Km
Azimuthal Gap: 108.0 deg
Number of Phases: 26
RMS Misfit: 0.11

Historic Activity

Focal Mechanism

More Information

Solution 1

Number of P First Motions: 12
Plane A Plane B Uncertainty
Strike 140º 22º 20.0º
Dip 25º 78º 23.0º
Rake 30º 112º 30.0º

Discrepant Stations

Station Network Channel Polarity Quality
B203 PB EHZ D 0.98

Map boundaries

 The red polygon is the reporting region for  this map; the black polygon is the authoritative region of the PNSN. Events inside the authoritative network are rendered as cirlces; events outside the authoritative region but inside the reporting region are rendered as squares. Explosions are always rendered as stars.  More

Cross Section

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