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== PRELIMINARY EARTHQUAKE 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 is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 8:26:41 PM (PDT) on Monday, September 30, 2013.
The magnitude 1.7 event occurred 7 km (4 miles) N (9 degrees) of Obsidian Butte, CA.
The hypocentral depth is 10 km ( 6 miles).



Magnitude 1.7 - local magnitude (Ml)
Time Monday, September 30, 2013 at 8:26:41 PM (PDT)
Tuesday, October 1, 2013 at 3:26:41 (UTC)
Distance from Obsidian Butte, CA - 7 km (4 miles) N (9 degrees)
Niland, CA - 10 km (6 miles) W (267 degrees)
Calipatria, CA - 16 km (10 miles) NW (319 degrees)
El Centro, CA - 49 km (31 miles) N (352 degrees)
Coordinates 33 deg. 14.0 min. N (33.233N), 115 deg. 37.5 min. W (115.624W)
Depth 9.8 km (6.1 miles)
Quality Good
Location Quality Parameters Nst= 13, Nph= 16, Dmin=4 km, Rmss=0.23 sec, Erho=2.1 km, Erzz=1.5 km, Gp=129.6 degrees
Event ID# ci11371834
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