Earthquake Report

Magnitude: 1.6
Fri September 7, 2012 04:10:09 PM (PDT)
Event Id: 60449137
Version #2: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 1.6 Md
Time: Fri September 7, 2012 04:10:09 PM (PDT)
Fri September 7, 2012 23:10:09 (UTC)
Distance From: 23.9 km ( 14.9 mi) ESE ( 103. azimuth) from Friday Harbor, WA
26.9 km ( 16.7 mi) WNW ( 286. azimuth) from Mount Vernon, WA
33.4 km ( 20.8 mi) W ( 268. azimuth) from Sedro Woolley, WA
Coordinates: 48.488, -122.688
Depth: 24.98 Km (15.24 miles)
Location Quality: Excellent
Event Id: 60449137
Horizontal Uncertainty: 0.32 Km
Depth Uncertainty: 0.67 Km
Azimuthal Gap: 52.0 deg
Number of Phases: 35
RMS Misfit: 0.2

Historic Activity


Focal Mechanism

More Information

Solution 1

Number of P First Motions: 17
Plane A Plane B Uncertainty
Strike 65º 203º 10.0º
Dip 20º 75º 8.0º
Rake 130º 77º 20.0º

Discrepant Stations

Station Network Channel Polarity Quality

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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