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 #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 8:54:42 AM (PDT) on Saturday, October 18, 2025.
The magnitude 0.4 event occurred 4 km (2 miles) NNE (27 degrees) of Norco, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 0.4 - local magnitude (Ml) |
| Time | Saturday, October 18, 2025 at 8:54:42 AM (PDT) Saturday, October 18, 2025 at 15:54:42 (UTC) |
| Distance from |
Norco, CA - 4 km (2 miles) NNE (27 degrees) Mira Loma, CA - 4 km (2 miles) SSW (200 degrees) Pedley, CA - 5 km (3 miles) WSW (254 degrees) Glen Avon, CA - 7 km (4 miles) SW (217 degrees) Home Gardens, CA - 9 km (6 miles) N (355 degrees) |
| Coordinates | 33 deg. 57.8 min. N (33.963N), 117 deg. 31.8 min. W (117.529W) |
| Depth | 5.23 km (3.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=10, Nph=15, Dmin=4.2 km, Rmss=0.08 sec, Erho=0.26 km, Erzz=0.42 km, Gp=153 degrees |
| Event ID# | ci41110831 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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