== 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 4:15:15 AM (PDT) on Friday, October 31, 2008.
The magnitude 0.9 event occurred 3 km (2 miles) NNW of The Geysers, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 0.9 - duration magnitude (Md)
Time Friday, October 31, 2008 at 4:15:15 AM (PDT)
Friday, October 31, 2008 at 11:15:15 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) NNW (343 degrees)
Cobb, CA - 8 km (5 miles) W (263 degrees)
Anderson Springs, CA - 12 km (8 miles) WNW (298 degrees)
Santa Rosa, CA - 43 km (27 miles) NNW (347 degrees)
Sacramento, CA - 121 km (75 miles) WNW (285 degrees)
Coordinates 38 deg. 49.6 min. N (38.826N), 122 deg. 49.1 min. W (122.818W)
Depth 3.5 km (2.2 miles)
Location Quality Good
Location Quality Parameters Nst= 10, Nph= 10, Dmin=2 km, Rmss=0.06 sec, Erho=0.6 km, Erzz=0.9 km, Gp=165.6 degrees
Event ID# nc51210388
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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