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 0:41:17 AM (PST) on Friday, December 5, 2025.
The magnitude 1.0 event occurred 3 km (2 miles) ENE (74 degrees) of Colton, CA.
The hypocentral depth is 14 km ( 8 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Friday, December 5, 2025 at 0:41:17 AM (PST) Friday, December 5, 2025 at 8:41:17 (UTC) |
| Distance from |
Colton, CA - 3 km (2 miles) ENE (74 degrees) Loma Linda, CA - 4 km (3 miles) NNW (335 degrees) San Bernardino, CA - 5 km (3 miles) SSE (168 degrees) Grand Terrace, CA - 6 km (4 miles) NNE (30 degrees) Highland, CA - 8 km (5 miles) SW (232 degrees) |
| Coordinates | 34 deg. 4.9 min. N (34.082N), 117 deg. 16.8 min. W (117.281W) |
| Depth | 13.64 km (8.50 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=65, Nph=110, Dmin=2.6 km, Rmss=0.16 sec, Erho=0.14 km, Erzz=0.33 km, Gp=27 degrees |
| Event ID# | ci41133047 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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