== 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 5:00:07 PM (PDT) on Monday, May 4, 2009.
The magnitude 0.7 event occurred 5 km (3 miles) ESE of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 0.7 - duration magnitude (Md)
Time Monday, May 4, 2009 at 5:00:07 PM (PDT)
Tuesday, May 5, 2009 at 0:00:07 (UTC)
Distance from The Geysers, CA - 5 km (3 miles) ESE (113 degrees)
Anderson Springs, CA - 5 km (3 miles) W (277 degrees)
Cobb, CA - 7 km (4 miles) SSW (205 degrees)
Santa Rosa, CA - 37 km (23 miles) N (353 degrees)
Sacramento, CA - 114 km (71 miles) WNW (283 degrees)
Coordinates 38 deg. 46.8 min. N (38.781N), 122 deg. 45.3 min. W (122.754W)
Depth 1.5 km (0.9 miles)
Location Quality Excellent
Location Quality Parameters Nst= 12, Nph= 12, Dmin=1 km, Rmss=0.06 sec, Erho=0.3 km, Erzz=0.4 km, Gp=79.2 degrees
Event ID# nc51221023
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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