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 #8: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 3:01:16 AM (PDT) on Friday, August 1, 2025.
The magnitude 1.0 event occurred 7 km (4 miles) NNE (16 degrees) of Fontana, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Friday, August 1, 2025 at 3:01:16 AM (PDT) Friday, August 1, 2025 at 10:01:16 (UTC) |
| Distance from |
Fontana, CA - 7 km (4 miles) NNE (16 degrees) Rialto, CA - 8 km (5 miles) NW (312 degrees) Devore, CA - 8 km (5 miles) SSW (205 degrees) Muscoy, CA - 9 km (5 miles) W (272 degrees) Bloomington, CA - 10 km (6 miles) NNW (338 degrees) |
| Coordinates | 34 deg. 9.4 min. N (34.157N), 117 deg. 26.3 min. W (117.438W) |
| Depth | 6.64 km (4.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=70, Nph=109, Dmin=4.1 km, Rmss=0.2 sec, Erho=0.17 km, Erzz=0.39 km, Gp=35 degrees |
| Event ID# | ci41250408 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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