== 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 1:31:43 AM (PDT) on Sunday, May 10, 2009.
The magnitude 1.0 event occurred 1 km (1 miles) NNW of The Geysers, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Sunday, May 10, 2009 at 1:31:43 AM (PDT)
Sunday, May 10, 2009 at 8:31:43 (UTC)
Distance from The Geysers, CA - 1 km (1 miles) NNW (343 degrees)
Cobb, CA - 8 km (5 miles) WSW (248 degrees)
Anderson Springs, CA - 11 km (7 miles) WNW (290 degrees)
Santa Rosa, CA - 41 km (25 miles) NNW (347 degrees)
San Francisco City Hall, CA - 120 km (74 miles) NNW (344 degrees)
Coordinates 38 deg. 48.5 min. N (38.808N), 122 deg. 48.6 min. W (122.810W)
Depth 2.9 km (1.8 miles)
Location Quality Excellent
Location Quality Parameters Nst= 19, Nph= 19, Dmin=1 km, Rmss=0.07 sec, Erho=0.3 km, Erzz=0.6 km, Gp=50.4 degrees
Event ID# nc51221316
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

Back to map

spacer