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

Version #2: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A microearthquake occurred at 8:56:34 AM (PDT) on Tuesday, May 12, 2009.
The magnitude 2.4 event occurred 2 km (1 miles) N of The Geysers, CA.
The hypocentral depth is 2 km ( 2 miles).


Magnitude 2.4 - duration magnitude (Md)
Time Tuesday, May 12, 2009 at 8:56:34 AM (PDT)
Tuesday, May 12, 2009 at 15:56:34 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) N (3 degrees)
Cobb, CA - 7 km (5 miles) WSW (254 degrees)
Anderson Springs, CA - 11 km (7 miles) WNW (295 degrees)
Santa Rosa, CA - 42 km (26 miles) NNW (348 degrees)
Sacramento, CA - 120 km (74 miles) WNW (284 degrees)
Coordinates 38 deg. 49.0 min. N (38.817N), 122 deg. 48.3 min. W (122.805W)
Depth 2.4 km (1.5 miles)
Location Quality Excellent
Location Quality Parameters Nst= 50, Nph= 50, Dmin=1 km, Rmss=0.07 sec, Erho=0.1 km, Erzz=0.2 km, Gp=32.4 degrees
Event ID# nc51221446
Additional Information map with fault names
Google Earth KML (Requires Google Earth.)
Did you feel it?
NCSN First Motion Mechanism 1
Waveforms

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

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