Recent Earthquakes in California and Nevada


== 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 6:27:38 PM (PDT) on Sunday, August 3, 2025.
The magnitude 2.0 event occurred 7 km (4 miles) NNE (28 degrees) of Fontana, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 2.0 - local magnitude (Ml)
Time Sunday, August 3, 2025 at 6:27:38 PM (PDT)
Monday, August 4, 2025 at 1:27:38 (UTC)
Distance from Fontana, CA - 7 km (4 miles) NNE (28 degrees)
Rialto, CA - 7 km (4 miles) NW (316 degrees)
Muscoy, CA - 7 km (5 miles) W (268 degrees)
Devore, CA - 8 km (5 miles) SSW (195 degrees)
Bloomington, CA - 9 km (6 miles) NNW (344 degrees)
Coordinates 34 deg. 9.1 min. N (34.152N), 117 deg. 25.4 min. W (117.424W)
Depth 5.92 km (3.70 miles)
Quality Good
Location Quality Parameters Nst=114, Nph=207, Dmin=4.6 km, Rmss=0.2 sec, Erho=0.11 km, Erzz=0.32 km, Gp=16 degrees
Event ID# ci41252384
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