== PRELIMINARY EARTHQUAKE REPORT ==

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

Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 4:55:41 AM (PDT) on Friday, October 4, 2013.
The magnitude 0.5 event occurred 4 km (3 miles) SE of Obsidian Butte, CA.
The hypocentral depth is 0.4 km (0.2 miles).

Magnitude		0.5 - (unknown type)
Time		Friday, October 4, 2013 at 4:55:41 AM (PDT) Friday, October 4, 2013 at 11:55:41 (UTC)
Distance from		Obsidian Butte, CA - 4 km (3 miles) SE (146 degrees) Calipatria, CA - 9 km (6 miles) W (278 degrees) Westmorland, CA - 11 km (7 miles) N (5 degrees) El Centro, CA - 39 km (24 miles) N (352 degrees)
Coordinates		33 deg. 8.3 min. N (33.138N), 115 deg. 36.6 min. W (115.610W)
Depth		0.4 km (0.2 miles)
Quality		Poor
Location Quality Parameters		Nst= 11, Nph= 11, Dmin=4 km, Rmss=0.09 sec, Erho=1.2 km, Erzz=31.6 km, Gp=208.8 degrees
Event ID#		ci11372922
Additional Information		map ||
		Waveforms

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

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