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Earthquake Report

Magnitude 4.1, WSW of Friday Harbor, WA
Friday September 20, 2002 at 05:55:21.00 (PDT)

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Magnitude 4.1
Time Saturday September 21, 2002 at 00:55:21.00 (UTC)
Friday September 20, 2002 at 05:55:21.00 (PDT)
Distance from 10.6 km WSW of Friday Harbor, WA
17.6 km ENE of Victoria, BC
71.9 km S of Vancouver,BC
Coordinates 48.486 deg N
123.127 deg W
Depth 23 km
Quality fair (CA)
Note: 1 km = 0.621 mile or 1 mile = 1.61 km
Map showing epicenter
Name of Event File: 02092100552p

This is an automated web page produced after a significant earthquake to give essential information about the earthquake, its aftershocks, and previous earthquake activity in the region. Some of the information here will be updated as aftershocks occur.
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    Foreshocks and Aftershocks - The following information will be updated as new aftershocks occur. Included are:

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    • Detailed Map of the earthquakes in this catalog for the epicentral region.
    • Seismic Activity as a function of time in the epicentral region since the time of the mainshock.

    Focal Mechanism - A diagram and table of the P-wave fault plane solution. If sufficient P-wave first motion data are available, a fault plane determination for the earthquake will be available.

    Strong-Motion Information - Data from digital accelerographs.

    Related Information - Most Up-to-Date Local and Global Earthquake Summaries

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