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 #3: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 0:29:42 AM (PST) on Thursday, December 4, 2025.
The magnitude 1.0 event occurred 15 km (10 miles) S of Big Bear Lake, CA.
The hypocentral depth is 11 km ( 7 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Thursday, December 4, 2025 at 0:29:42 AM (PST) Thursday, December 4, 2025 at 8:29:42 (UTC) |
| Distance from |
Big Bear Lake, CA - 15 km (10 miles) S (178 degrees) Yucaipa, CA - 15 km (9 miles) ENE (58 degrees) Big Bear City, CA - 18 km (11 miles) SSW (198 degrees) Calimesa, CA - 19 km (12 miles) NE (46 degrees) Banning, CA - 20 km (13 miles) N (352 degrees) |
| Coordinates | 34 deg. 6.4 min. N (34.106N), 116 deg. 54.3 min. W (116.905W) |
| Depth | 11.46 km (7.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=55, Nph=91, Dmin=3.2 km, Rmss=0.17 sec, Erho=0.16 km, Erzz=0.47 km, Gp=26 degrees |
| Event ID# | ci41132295 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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