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 7:39:54 PM (PST) on Sunday, December 21, 2025.
The magnitude 1.8 event occurred 1 km (1 miles) NE (54 degrees) of Loma Linda, CA.
The hypocentral depth is 17 km (10 miles).
| Magnitude | 1.8 - local magnitude (Ml) |
| Time | Sunday, December 21, 2025 at 7:39:54 PM (PST) Monday, December 22, 2025 at 3:39:54 (UTC) |
| Distance from |
Loma Linda, CA - 1 km (1 miles) NE (54 degrees) Grand Terrace, CA - 6 km (4 miles) ENE (68 degrees) Colton, CA - 6 km (4 miles) ESE (110 degrees) Redlands, CA - 6 km (4 miles) W (269 degrees) San Bernardino, CA - 9 km (6 miles) SSE (155 degrees) |
| Coordinates | 34 deg. 3.3 min. N (34.054N), 117 deg. 15.1 min. W (117.251W) |
| Depth | 16.51 km (10.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=95, Nph=175, Dmin=6.4 km, Rmss=0.18 sec, Erho=0.12 km, Erzz=0.26 km, Gp=22 degrees |
| Event ID# | ci41144895 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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