== 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 7:58:06 AM (PDT) on Wednesday, May 6, 2009.
The magnitude 0.5 event occurred 2 km (1 miles) NE of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 0.5 - duration magnitude (Md)
Time Wednesday, May 6, 2009 at 7:58:06 AM (PDT)
Wednesday, May 6, 2009 at 14:58:06 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) NE (55 degrees)
Cobb, CA - 7 km (4 miles) WSW (242 degrees)
Anderson Springs, CA - 9 km (6 miles) WNW (293 degrees)
Santa Rosa, CA - 41 km (25 miles) N (349 degrees)
Sacramento, CA - 118 km (73 miles) WNW (284 degrees)
Coordinates 38 deg. 48.4 min. N (38.807N), 122 deg. 47.4 min. W (122.790W)
Depth 2 km (1.2 miles)
Location Quality Excellent
Location Quality Parameters Nst= 22, Nph= 22, Dmin=0 km, Rmss=0.08 sec, Erho=0.2 km, Erzz=0.4 km, Gp=43.2 degrees
Event ID# nc51221115
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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