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== 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 2:52:04 AM (PDT) on Thursday, May 2, 2013.
The magnitude 1.6 event occurred 5 km (3 miles) NNE (12 degrees) of Punta Gorda, CA.
The hypocentral depth is 8 km ( 5 miles).



Magnitude 1.6 - duration magnitude (Md)
Time Thursday, May 2, 2013 at 2:52:04 AM (PDT)
Thursday, May 2, 2013 at 9:52:04 (UTC)
Distance from Punta Gorda, CA - 5 km (3 miles) NNE (12 degrees)
Petrolia, CA - 6 km (4 miles) WSW (248 degrees)
Rio Dell, CA - 30 km (19 miles) SW (224 degrees)
Eureka, CA - 57 km (36 miles) SSW (196 degrees)
Coordinates 40 deg. 18.3 min. N (40.305N), 124 deg. 21.0 min. W (124.350W)
Depth 7.8 km (4.8 miles)
Quality Fair
Location Quality Parameters Nst= 18, Nph= 18, Dmin=6 km, Rmss=0.16 sec, Erho=0.8 km, Erzz=0.6 km, Gp=230.4 degrees
Event ID# nc71980655
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