Earthquake Report

Magnitude: 0.8
Thu September 20, 2012 12:36PM (PDT)
Event Id: 60454237
Version #3: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 0.8 Md (Probable explosion)
Time: Thu September 20, 2012 12:36PM (PDT)
Thu September 20, 2012 19:36 (UTC)
Distance From: 28.3 km ( 17.6 mi) NNE ( 12. azimuth) from Tillamook, OR
53.6 km ( 33.3 mi) S ( 175. azimuth) from Astoria, OR
76.8 km ( 47.7 mi) NW ( 306. azimuth) from Newberg, OR
Coordinates: 45.705, -123.77
Depth: 0.01 Km (0.01 miles)
Location Quality: Fair
Event Id: 60454237
Horizontal Uncertainty: 1.21 Km
Depth Uncertainty: 31.61 Km
Azimuthal Gap: 171.0 deg
Number of Phases: 5
RMS Misfit: 0.17

Historic Activity


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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