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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 4:16:18 AM (PDT) on Friday, August 10, 2018.
The magnitude 0.7 event occurred 3 km (2 miles) NNE (31 degrees) of Fontana, CA.
The hypocentral depth is 6 km ( 4 miles).



Magnitude 0.7 - local magnitude (Ml)
Time Friday, August 10, 2018 at 4:16:18 AM (PDT)
Friday, August 10, 2018 at 11:16:18 (UTC)
Distance from Fontana, CA - 3 km (2 miles) NNE (31 degrees)
Bloomington, CA - 7 km (4 miles) NW (326 degrees)
Rialto, CA - 7 km (4 miles) WNW (287 degrees)
Muscoy, CA - 9 km (6 miles) WSW (249 degrees)
Devore, CA - 11 km (7 miles) SSW (198 degrees)
Coordinates 34 deg. 7.4 min. N (34.123N), 117 deg. 26.4 min. W (117.439W)
Depth 5.89 km (3.7 miles)
Quality Good
Location Quality Parameters Nst=25, Nph=40, Dmin=7.8 km, Rmss=0.16 sec, Erho=0.28 km, Erzz=0.79 km, Gp=74 degrees
Event ID# ci38242056
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