Earthquake Report

Magnitude: 2.8
Fri April 18, 1969 09:46PM (PST)
Event Id: 10835213
Version #1: This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Magnitude: 2.8 Md
Time: Fri April 18, 1969 09:46PM (PST)
Sat April 19, 1969 05:46 (UTC)
Distance From: 34.8 km ( 21.6 mi) S ( 172. azimuth) from Prosser, Wa
53.4 km ( 33.2 mi) SW ( 216. azimuth) from Richland, WA
56.2 km ( 34.9 mi) SW ( 233. azimuth) from Kennewick, WA
Coordinates: 45.898, -119.704
Depth: 0.02 Km (0.01 miles)
Location Quality: Good
Event Id: 10835213
Horizontal Uncertainty: 1.024 Km
Depth Uncertainty: 0.78 Km
Azimuthal Gap: 318.0 deg
Number of Phases: 9
RMS Misfit: 0.36

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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