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 10:29:14 PM (PST) on Tuesday, December 23, 2025.
The magnitude 1.5 event occurred 5 km (3 miles) W of Mira Loma, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 1.5 - local magnitude (Ml) |
| Time | Tuesday, December 23, 2025 at 10:29:14 PM (PST) Wednesday, December 24, 2025 at 6:29:14 (UTC) |
| Distance from |
Mira Loma, CA - 5 km (3 miles) W (281 degrees) Norco, CA - 8 km (5 miles) NNW (343 degrees) Ontario, CA - 8 km (5 miles) SE (139 degrees) Glen Avon, CA - 8 km (5 miles) W (262 degrees) Pedley, CA - 10 km (6 miles) WNW (288 degrees) |
| Coordinates | 34 deg. 0.1 min. N (34.002N), 117 deg. 34.4 min. W (117.574W) |
| Depth | 1.69 km (1.10 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=10, Nph=11, Dmin=9.5 km, Rmss=0.07 sec, Erho=0.92 km, Erzz=0.65 km, Gp=207 degrees |
| Event ID# | ci41146543 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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