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 11:54:18 PM (PST) on Thursday, December 18, 2025.
The magnitude 2.5 event occurred 3 km (2 miles) NE (53 degrees) of Fontana, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 2.5 - local magnitude (Ml) |
| Time | Thursday, December 18, 2025 at 11:54:18 PM (PST) Friday, December 19, 2025 at 7:54:18 (UTC) |
| Distance from |
Fontana, CA - 3 km (2 miles) NE (53 degrees) Bloomington, CA - 6 km (4 miles) NW (324 degrees) Rialto, CA - 6 km (4 miles) W (277 degrees) Muscoy, CA - 9 km (6 miles) WSW (241 degrees) Colton, CA - 12 km (7 miles) WNW (292 degrees) |
| Coordinates | 34 deg. 6.8 min. N (34.113N), 117 deg. 26.0 min. W (117.433W) |
| Depth | 14.44 km (9.00 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=44, Nph=58, Dmin=0.9 km, Rmss=0.67 sec, Erho=0.82 km, Erzz=1.838 km, Gp=20 degrees |
| Event ID# | ci41142647 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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