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 is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 10:25:31 AM (PDT) on Thursday, September 4, 2025.
The magnitude 1.0 event occurred 4 km (3 miles) SE of Loma Linda, CA.
The hypocentral depth is 16 km (10 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Thursday, September 4, 2025 at 10:25:31 AM (PDT) Thursday, September 4, 2025 at 17:25:31 (UTC) |
| Distance from |
Loma Linda, CA - 4 km (3 miles) SE (137 degrees) Redlands, CA - 6 km (4 miles) SW (228 degrees) Grand Terrace, CA - 8 km (5 miles) E (101 degrees) Colton, CA - 10 km (6 miles) SE (128 degrees) Mentone, CA - 10 km (6 miles) WSW (238 degrees) |
| Coordinates | 34 deg. 1.2 min. N (34.020N), 117 deg. 13.8 min. W (117.230W) |
| Depth | 16.08 km (10.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=32, Nph=55, Dmin=11.0 km, Rmss=0.18 sec, Erho=0.22 km, Erzz=0.62 km, Gp=36 degrees |
| Event ID# | ci41283320 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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