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 #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 6:53:29 PM (PST) on Friday, December 19, 2025.
The magnitude 0.9 event occurred 3 km (2 miles) ENE (70 degrees) of Colton, CA.
The hypocentral depth is 16 km (10 miles).
| Magnitude | 0.9 - local magnitude (Ml) |
| Time | Friday, December 19, 2025 at 6:53:29 PM (PST) Saturday, December 20, 2025 at 2:53:29 (UTC) |
| Distance from |
Colton, CA - 3 km (2 miles) ENE (70 degrees) Loma Linda, CA - 4 km (3 miles) NNW (332 degrees) San Bernardino, CA - 5 km (3 miles) S (170 degrees) Grand Terrace, CA - 6 km (4 miles) NNE (27 degrees) Rialto, CA - 8 km (5 miles) ESE (108 degrees) |
| Coordinates | 34 deg. 5.0 min. N (34.083N), 117 deg. 17.0 min. W (117.284W) |
| Depth | 16.02 km (10.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=32, Nph=52, Dmin=13.0 km, Rmss=0.16 sec, Erho=0.23 km, Erzz=0.54 km, Gp=64 degrees |
| Event ID# | ci41143431 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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