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 7:20:31 PM (PST) on Thursday, December 4, 2025.
The magnitude 0.8 event occurred 3 km (2 miles) SSE of Loma Linda, CA.
The hypocentral depth is 17 km (10 miles).
| Magnitude | 0.8 - local magnitude (Ml) |
| Time | Thursday, December 4, 2025 at 7:20:31 PM (PST) Friday, December 5, 2025 at 3:20:31 (UTC) |
| Distance from |
Loma Linda, CA - 3 km (2 miles) SSE (152 degrees) Grand Terrace, CA - 6 km (4 miles) E (96 degrees) Redlands, CA - 7 km (4 miles) WSW (243 degrees) Colton, CA - 8 km (5 miles) SE (130 degrees) Moreno Valley, CA - 11 km (7 miles) N (351 degrees) |
| Coordinates | 34 deg. 1.7 min. N (34.028N), 117 deg. 14.9 min. W (117.248W) |
| Depth | 16.76 km (10.40 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=21, Nph=34, Dmin=11.3 km, Rmss=0.15 sec, Erho=0.67 km, Erzz=0.76 km, Gp=235 degrees |
| Event ID# | ci41132935 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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