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 #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 9:46:02 AM (PDT) on Thursday, July 31, 2025.
The magnitude 0.3 event occurred 7 km (4 miles) NNE (25 degrees) of Fontana, CA.
The hypocentral depth is 7 km ( 5 miles).
| Magnitude | 0.3 - local magnitude (Ml) |
| Time | Thursday, July 31, 2025 at 9:46:02 AM (PDT) Thursday, July 31, 2025 at 16:46:02 (UTC) |
| Distance from |
Fontana, CA - 7 km (4 miles) NNE (25 degrees) Rialto, CA - 7 km (5 miles) NW (313 degrees) Devore, CA - 8 km (5 miles) SSW (197 degrees) Muscoy, CA - 8 km (5 miles) W (267 degrees) Bloomington, CA - 9 km (6 miles) NNW (342 degrees) |
| Coordinates | 34 deg. 9.1 min. N (34.151N), 117 deg. 25.7 min. W (117.428W) |
| Depth | 7.47 km (4.60 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=4, Nph=8, Dmin=9.1 km, Rmss=0.08 sec, Erho=0.95 km, Erzz=1.88 km, Gp=190 degrees |
| Event ID# | ci41249528 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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