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== PRELIMINARY EARTHQUAKE REPORT ==
California Integrated Seismic Net
USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR

Version #1: This report supersedes any earlier reports of this event.
This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A microearthquake occurred at 4:55:16 AM (PDT) on Wednesday, May 7, 2008.
The magnitude 2.2 event occurred 3 km (2 miles) NNW of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 2.2 - duration magnitude (Md)
Time Wednesday, May 7, 2008 at 4:55:16 AM (PDT)
Wednesday, May 7, 2008 at 11:55:16 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) NNW (327 degrees)
Cobb, CA - 9 km (6 miles) W (262 degrees)
Anderson Springs, CA - 13 km (8 miles) WNW (295 degrees)
Santa Rosa, CA - 43 km (27 miles) NNW (346 degrees)
San Francisco City Hall, CA - 122 km (76 miles) NNW (343 degrees)
Coordinates 38 deg. 49.4 min. N (38.823N), 122 deg. 49.6 min. W (122.827W)
Depth 2.2 km (1.4 miles)
Location Quality Excellent
Location Quality Parameters Nst= 25, Nph= 25, Dmin=1 km, Rmss=0.06 sec, Erho=0.2 km, Erzz=0.3 km, Gp=68.4 degrees
Event ID# nc40217182
Additional Information 2-degree map
Google Earth KML (Requires Google Earth.)
Waveforms

For more information, see http://quake.wr.usgs.gov/

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