== 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 7:26:00 PM (PDT) on Thursday, May 7, 2009.
The magnitude 0.9 event occurred 3 km (2 miles) N of The Geysers, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 0.9 - duration magnitude (Md)
Time Thursday, May 7, 2009 at 7:26:00 PM (PDT)
Friday, May 8, 2009 at 2:26:00 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) N (9 degrees)
Cobb, CA - 7 km (4 miles) W (259 degrees)
Anderson Springs, CA - 11 km (7 miles) WNW (299 degrees)
Santa Rosa, CA - 42 km (26 miles) N (349 degrees)
Sacramento, CA - 119 km (74 miles) WNW (285 degrees)
Coordinates 38 deg. 49.4 min. N (38.823N), 122 deg. 48.1 min. W (122.802W)
Depth 3.6 km (2.2 miles)
Location Quality Good
Location Quality Parameters Nst= 13, Nph= 13, Dmin=1 km, Rmss=0.06 sec, Erho=0.5 km, Erzz=1 km, Gp=144 degrees
Event ID# nc51221197
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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