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 3:33:14 PM (PST) on Thursday, December 4, 2025.
The magnitude 0.8 event occurred 4 km (2 miles) SW of Redlands, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 0.8 - local magnitude (Ml) |
| Time | Thursday, December 4, 2025 at 3:33:14 PM (PST) Thursday, December 4, 2025 at 23:33:14 (UTC) |
| Distance from |
Redlands, CA - 4 km (2 miles) SW (220 degrees) Loma Linda, CA - 5 km (3 miles) ESE (111 degrees) Mentone, CA - 8 km (5 miles) WSW (237 degrees) Grand Terrace, CA - 10 km (6 miles) E (92 degrees) Colton, CA - 11 km (7 miles) ESE (116 degrees) |
| Coordinates | 34 deg. 1.8 min. N (34.031N), 117 deg. 12.4 min. W (117.207W) |
| Depth | 14.05 km (8.70 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=23, Nph=36, Dmin=8.8 km, Rmss=0.2 sec, Erho=0.31 km, Erzz=0.97 km, Gp=87 degrees |
| Event ID# | ci41132815 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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