Earthquake Report

Magnitude: 2.8
Fri August 1, 1969 08:58:25 AM (PDT)
Event Id: 10835508
Version #1: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 2.8 Md (Probable explosion)
Time: Fri August 1, 1969 08:58:25 AM (PDT)
Fri August 1, 1969 15:58:25 (UTC)
Distance From: 24.3 km ( 15.1 mi) NW ( 312. azimuth) from Coulee City, WA
37.5 km ( 23.3 mi) ESE ( 104. azimuth) from Chelan, WA
44.2 km ( 27.5 mi) WSW ( 242. azimuth) from Grand Coulee, WA
Coordinates: 47.757, -119.527
Depth: 12.64 Km (7.71 miles)
Location Quality: Poor
Event Id: 10835508
Horizontal Uncertainty: 10.772 Km
Depth Uncertainty: 8.76 Km
Azimuthal Gap: 340.0 deg
Number of Phases: 6
RMS Misfit: 0.45

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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