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 5:06:11 PM (PST) on Wednesday, December 10, 2025.
The magnitude 1.7 event occurred 6 km (4 miles) NNE (17 degrees) of San Dimas, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 1.7 - local magnitude (Ml) |
| Time | Wednesday, December 10, 2025 at 5:06:11 PM (PST) Thursday, December 11, 2025 at 1:06:11 (UTC) |
| Distance from |
San Dimas, CA - 6 km (4 miles) NNE (17 degrees) La Verne, CA - 7 km (4 miles) NNW (345 degrees) Glendora, CA - 8 km (5 miles) ENE (70 degrees) Charter Oak, CA - 8 km (5 miles) NE (40 degrees) Claremont, CA - 9 km (6 miles) NW (319 degrees) |
| Coordinates | 34 deg. 9.6 min. N (34.160N), 117 deg. 47.2 min. W (117.787W) |
| Depth | 13.87 km (8.60 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=14, Nph=22, Dmin=7.7 km, Rmss=0.12 sec, Erho=0.34 km, Erzz=0.54 km, Gp=82 degrees |
| Event ID# | ci41137071 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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