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Southern California Earthquake Data Center

Recent Earthquakes

Recent Earthquakes in California and Nevada

== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California

Version #3: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.


A micro earthquake occurred at 8:03:21 PM (PDT) on Sunday, May 5, 2013.
The magnitude 2.3 event occurred 6 km (4 miles) NNW of Healdsburg, CA.
The hypocentral depth is 6 km ( 4 miles).




Magnitude 2.3 - duration magnitude (Md)
Time Sunday, May 5, 2013 at 8:03:21 PM (PDT)
Monday, May 6, 2013 at 3:03:21 (UTC)
Distance from Healdsburg, CA - 6 km (4 miles) NNW (348 degrees)
Windsor, CA - 14 km (9 miles) NNW (336 degrees)
The Geysers, CA - 16 km (10 miles) SSW (204 degrees)
Santa Rosa, CA - 29 km (18 miles) NNW (330 degrees)
Coordinates 38 deg. 39.9 min. N (38.666N), 122 deg. 53.0 min. W (122.883W)
Depth 6.4 km (4.0 miles)
Quality Good
Location Quality Parameters Nst= 79, Nph= 79, Dmin=9 km, Rmss=0.11 sec, Erho=0.1 km, Erzz=0.5 km, Gp=39.6 degrees
Event ID nc71986251
Additional Information map || waveforms
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Waveforms
NCSS First Motion Mechanism 1
NCSS First Motion Mechanism 2



Did you feel it? || Shake Map North
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