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

A micro earthquake occurred at 4:46:11 AM (PST) on Tuesday, December 4, 2018.
The magnitude 0.7 event occurred 23 km (14 miles) SW of Ocotillo Wells, CA.
The hypocentral depth is 12 km ( 7 miles).



Magnitude 0.7 - local magnitude (Ml)
Time Tuesday, December 4, 2018 at 4:46:11 AM (PST)
Tuesday, December 4, 2018 at 12:46:11 (UTC)
Distance from Ocotillo Wells, CA - 23 km (14 miles) SW (235 degrees)
Julian, CA - 26 km (16 miles) ESE (104 degrees)
Borrego Springs, CA - 26 km (16 miles) S (172 degrees)
Pine Valley, CA - 29 km (18 miles) NE (39 degrees)
Warner Springs, CA - 40 km (25 miles) SE (136 degrees)
Coordinates 33 deg. 1.3 min. N (33.022N), 116 deg. 20.1 min. W (116.336W)
Depth 11.82 km (7.3 miles)
Quality Excellent
Location Quality Parameters Nst=19, Nph=29, Dmin=11.4 km, Rmss=0.13 sec, Erho=0.22 km, Erzz=0.79 km, Gp=90 degrees
Event ID# ci38152783
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