== 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 11:33:16 AM (PDT) on Tuesday, May 5, 2009.
The magnitude 1.0 event occurred 3 km (2 miles) NNW of The Geysers, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Tuesday, May 5, 2009 at 11:33:16 AM (PDT)
Tuesday, May 5, 2009 at 18:33:16 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) NNW (332 degrees)
Cobb, CA - 9 km (5 miles) WSW (258 degrees)
Anderson Springs, CA - 12 km (8 miles) WNW (294 degrees)
Santa Rosa, CA - 42 km (26 miles) NNW (346 degrees)
San Francisco City Hall, CA - 121 km (75 miles) NNW (343 degrees)
Coordinates 38 deg. 49.1 min. N (38.819N), 122 deg. 49.3 min. W (122.821W)
Depth 2.6 km (1.6 miles)
Location Quality Excellent
Location Quality Parameters Nst= 14, Nph= 14, Dmin=1 km, Rmss=0.05 sec, Erho=0.3 km, Erzz=0.6 km, Gp=82.8 degrees
Event ID# nc51221070
Additional Information map with fault names
Google Earth KML (Requires Google Earth.)
Waveforms

Did you feel it? || Shake Map North
For more information, see http://quake.wr.usgs.gov/ || Contacts

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