== PRELIMINARY EARTHQUAKE REPORT ==

Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, 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 10:53:47 PM (PDT) on Thursday, May 2, 2013.
The magnitude 0.6 event occurred 10 km (6 miles) N (3 degrees) of Rancho Cucamonga, CA.
The hypocentral depth is 5 km ( 3 miles).

Magnitude		0.6 - local magnitude (Ml)
Time		Thursday, May 2, 2013 at 10:53:47 PM (PDT) Friday, May 3, 2013 at 5:53:47 (UTC)
Distance from		Rancho Cucamonga, CA - 10 km (6 miles) N (3 degrees) Upland, CA - 12 km (7 miles) NNE (29 degrees) Mt. Baldy, CA - 12 km (7 miles) SSE (151 degrees) San Bernardino, CA - 29 km (18 miles) WNW (291 degrees)
Coordinates		34 deg. 11.8 min. N (34.197N), 117 deg. 35.3 min. W (117.588W)
Depth		4.7 km (2.9 miles)
Quality		Good
Location Quality Parameters		Nst= 17, Nph= 25, Dmin=8 km, Rmss=0.17 sec, Erho=0.4 km, Erzz=0.6 km, Gp=57.6 degrees
Event ID#		ci15336721
Additional Information		map ||
		Waveforms

For more information, see http://quake.wr.usgs.gov/

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