Earthquake Report

Magnitude: 1.6
Sun August 26, 2012 09:09PM (PDT)
Event Id: 60458026
Version #2: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 1.6 Md
Time: Sun August 26, 2012 09:09PM (PDT)
Mon August 27, 2012 04:09 (UTC)
Distance From: 11.5 km ( 7.1 mi) SE ( 134. azimuth) from Granite Falls, WA
19.2 km ( 12.0 mi) NNE ( 26. azimuth) from Monroe, WA
21.0 km ( 13.1 mi) ENE ( 59. azimuth) from Snohomish, WA
Coordinates: 48.012, -121.857
Depth: 66.61 Km (40.63 miles)
Location Quality: Excellent
Event Id: 60458026
Horizontal Uncertainty: 0.55 Km
Depth Uncertainty: 0.88 Km
Azimuthal Gap: 58.0 deg
Number of Phases: 29
RMS Misfit: 0.2

Historic Activity

Historic_map_icon

Focal Mechanism

More Information

Solution 1

Uw60458026.uwfm1
Number of P First Motions: 20
Plane A Plane B Uncertainty
Strike 190º 297º 35.0º
Dip 75º 42º 15.0º
Rake 130º 23º 40.0º

Discrepant Stations

Station Network Channel Polarity Quality
B013 PB EHZ D 0.92
SQM UW EHZ D 0.92
HDW UW EHZ U 0.92
D03D TA BHZ U 0.92
FMW UW EHZ D 0.92

Solution 2

Uw60458026.uwfm2
Number of P First Motions: 20
Plane A Plane B Uncertainty
Strike 330º 192º 43.0º
Dip 20º 75º 18.0º
Rake 50º 103º 30.0º

Discrepant Stations

Station Network Channel Polarity Quality
B013 PB EHZ D 0.92
GMW UW EHZ D 0.92
GNW UW BHZ D 0.92
SQM UW EHZ D 0.92
DOSE UW BHZ D 0.92
RPW UW EHZ D 0.92
60458026

Station

Code, or name, to designate a particular seismic station