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

A micro earthquake occurred at 10:29:23 AM (PDT) on Thursday, July 12, 2018.
The magnitude 0.8 event occurred 6 km (4 miles) WNW of Mira Loma, CA.
The hypocentral depth is 4 km ( 3 miles).



Magnitude 0.8 - local magnitude (Ml)
Time Thursday, July 12, 2018 at 10:29:23 AM (PDT)
Thursday, July 12, 2018 at 17:29:23 (UTC)
Distance from Mira Loma, CA - 6 km (4 miles) WNW (289 degrees)
Ontario, CA - 7 km (4 miles) SE (136 degrees)
Glen Avon, CA - 9 km (5 miles) W (269 degrees)
Norco, CA - 9 km (6 miles) NNW (343 degrees)
Chino, CA - 10 km (6 miles) E (91 degrees)
Coordinates 34 deg. 0.6 min. N (34.010N), 117 deg. 34.7 min. W (117.578W)
Depth 4.45 km (2.8 miles)
Quality Good
Location Quality Parameters Nst=21, Nph=29, Dmin=10.2 km, Rmss=0.13 sec, Erho=0.24 km, Erzz=0.61 km, Gp=102 degrees
Event ID# ci38219888
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