== 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 8:55:59 PM (PDT) on Saturday, May 9, 2009.
The magnitude 1.6 event occurred 2 km (1 miles) NNE of The Geysers, CA.
The hypocentral depth is 1 km ( 1 mile).


Magnitude 1.6 - duration magnitude (Md)
Time Saturday, May 9, 2009 at 8:55:59 PM (PDT)
Sunday, May 10, 2009 at 3:55:59 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) NNE (27 degrees)
Cobb, CA - 7 km (4 miles) WSW (252 degrees)
Anderson Springs, CA - 10 km (6 miles) WNW (298 degrees)
Santa Rosa, CA - 42 km (26 miles) N (349 degrees)
Sacramento, CA - 119 km (74 miles) WNW (285 degrees)
Coordinates 38 deg. 49.0 min. N (38.817N), 122 deg. 47.7 min. W (122.794W)
Depth 1.3 km (0.8 miles)
Location Quality Excellent
Location Quality Parameters Nst= 25, Nph= 25, Dmin=1 km, Rmss=0.04 sec, Erho=0.2 km, Erzz=0.3 km, Gp=64.8 degrees
Event ID# nc51221309
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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