4.2 Mw - OFFSHORE NORTHERN CALIFORNIA

4.2 Mw - OFFSHORE NORTHERN CALIFORNIA
Preliminary Earthquake Report
Magnitude
4.2 Mw
Date-Time
30 Jul 2008 13:39:33 UTC
30 Jul 2008 06:39:33 near epicenter
30 Jul 2008 07:39:33 standard time in your timezone
Location
40.462N 125.247W
Depth
5 km
Distances
83 km (52 miles) W (281 degrees) of Petrolia, CA
84 km (52 miles) W (261 degrees) of Ferndale, CA
93 km (58 miles) WSW (251 degrees) of Humboldt Hill, CA
99 km (61 miles) WSW (249 degrees) of Eureka, CA
386 km (240 miles) NW (322 degrees) of San Francisco City Hall, CA
Location Uncertainty
Horizontal: 2.9 km; Vertical 18.2 km
Parameters
Nph = 69; Dmin = 110.0 km; Rmss = 0.37 seconds; Gp = 237°M-type = Mw; Version = 3
Event ID
NC 40221369 ***This event has been revised.

For updates, maps, and technical information, see:

Event Page or U.S.G.S. Earthquake Hazards Program
CISN Northern California Management CenterU.S. Geological SurveyBerkeley Seismological Laboratory

http://www.cisn.org/ncmc.html

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