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


A micro earthquake occurred at 7:42:52 PM (PDT) on Tuesday, May 7, 2013.
The magnitude 0.5 event occurred 7 km (4 miles) WSW of The Geysers, CA.
The hypocentral depth is 4 km ( 2 miles).




Magnitude 0.5 - duration magnitude (Md)
Time Tuesday, May 7, 2013 at 7:42:52 PM (PDT)
Wednesday, May 8, 2013 at 2:42:52 (UTC)
Distance from The Geysers, CA - 7 km (4 miles) WSW (252 degrees)
Cloverdale, CA - 12 km (8 miles) ESE (104 degrees)
Healdsburg, CA - 19 km (12 miles) N (357 degrees)
Santa Rosa, CA - 40 km (25 miles) NNW (339 degrees)
Coordinates 38 deg. 46.8 min. N (38.779N), 122 deg. 52.9 min. W (122.881W)
Depth 3.9 km (2.4 miles)
Quality Fair
Location Quality Parameters Nst= 15, Nph= 15, Dmin=6 km, Rmss=0.04 sec, Erho=1.1 km, Erzz=0.9 km, Gp=244.8 degrees
Event ID nc71987616
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