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 #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 2:17:30 PM (PST) on Monday, December 22, 2025.
The magnitude 1.0 event occurred 3 km (2 miles) E (96 degrees) of Fontana, CA.
The hypocentral depth is 16 km (10 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Monday, December 22, 2025 at 2:17:30 PM (PST) Monday, December 22, 2025 at 22:17:30 (UTC) |
| Distance from |
Fontana, CA - 3 km (2 miles) E (96 degrees) Bloomington, CA - 4 km (2 miles) NW (318 degrees) Rialto, CA - 5 km (3 miles) WSW (255 degrees) Muscoy, CA - 10 km (6 miles) SW (227 degrees) Colton, CA - 10 km (6 miles) WNW (283 degrees) |
| Coordinates | 34 deg. 5.7 min. N (34.095N), 117 deg. 25.3 min. W (117.422W) |
| Depth | 15.54 km (9.70 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=37, Nph=58, Dmin=1.6 km, Rmss=0.13 sec, Erho=0.18 km, Erzz=0.17 km, Gp=67 degrees |
| Event ID# | ci41145703 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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