== 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 2:29:27 AM (PDT) on Thursday, May 7, 2009.
The magnitude 0.7 event occurred 4 km (3 miles) W of Cobb, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 0.7 - duration magnitude (Md)
Time Thursday, May 7, 2009 at 2:29:27 AM (PDT)
Thursday, May 7, 2009 at 9:29:27 (UTC)
Distance from Cobb, CA - 4 km (3 miles) W (275 degrees)
The Geysers, CA - 5 km (3 miles) NNE (32 degrees)
Anderson Springs, CA - 10 km (6 miles) NW (315 degrees)
Santa Rosa, CA - 44 km (27 miles) N (352 degrees)
Sacramento, CA - 118 km (73 miles) WNW (286 degrees)
Coordinates 38 deg. 50.3 min. N (38.839N), 122 deg. 46.4 min. W (122.774W)
Depth 2.6 km (1.6 miles)
Location Quality Good
Location Quality Parameters Nst= 17, Nph= 17, Dmin=1 km, Rmss=0.05 sec, Erho=0.3 km, Erzz=0.4 km, Gp=122.4 degrees
Event ID# nc51221155
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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