Earthquake Report

Magnitude: 0.5
Wed August 1, 2012 05:00:21 AM (PDT)
Event Id: 60433912
Version #7: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 0.5 Md
Time: Wed August 1, 2012 05:00:21 AM (PDT)
Wed August 1, 2012 12:00:21 (UTC)
Distance From: 40.5 km ( 25.2 mi) S ( 170. azimuth) from Morton, WA
59.0 km ( 36.7 mi) E ( 83. azimuth) from Longview, WA
74.5 km ( 46.3 mi) S ( 175. azimuth) from Eatonville, WA
Coordinates: 46.2, -122.181
Depth: 2.56 Km (1.56 miles)
Location Quality: Excellent
Event Id: 60433912
Horizontal Uncertainty: 0.28 Km
Depth Uncertainty: 0.31 Km
Azimuthal Gap: 75.0 deg
Number of Phases: 22
RMS Misfit: 0.11

Historic Activity

Focal Mechanism

More Information

Solution 1

Number of P First Motions: 17
Plane A Plane B Uncertainty
Strike 20º 234º 25.0º
Dip 30º 64º 20.0º
Rake -120º -74º 25.0º

Discrepant Stations


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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