== PRELIMINARY EVENT REPORT ==

Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California

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

An event occurred at 1:32:32 PM (PDT) on Friday, October 4, 2013.
The magnitude 1.5 event (a probable quarry explosion) occurred 2 km (2 miles) S of Quarry at CORONA .
The hypocentral depth is 0 km (0.0 miles).

Magnitude		1.5 - local magnitude (Ml)
Time		Friday, October 4, 2013 at 1:32:32 PM (PDT) Friday, October 4, 2013 at 20:32:32 (UTC)
Distance from		Quarry at CORONA (a probable quarry explosion) - 2 km (2 miles) S (185 degrees) Corona, CA - 8 km (5 miles) SE (132 degrees) Riverside, CA - 17 km (11 miles) SW (215 degrees) Riverside, CA - 21 km (13 miles) SW (214 degrees)
Coordinates		33 deg. 49.7 min. N (33.828N), 117 deg. 30.1 min. W (117.502W)
Depth		0 km (0.0 miles)
Quality		Poor
Location Quality Parameters		Nst= 13, Nph= 13, Dmin=14 km, Rmss=0.14 sec, Erho=1.5 km, Erzz=31.6 km, Gp=208.8 degrees
Event ID#		ci11373018
Additional Information		map ||
		Waveforms

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