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 9:58:16 PM (PDT) on Thursday, October 16, 2025.
The magnitude 1.2 event occurred 8 km (5 miles) SW of Lytle Creek, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | 1.2 - local magnitude (Ml) |
| Time | Thursday, October 16, 2025 at 9:58:16 PM (PDT) Friday, October 17, 2025 at 4:58:16 (UTC) |
| Distance from |
Lytle Creek, CA - 8 km (5 miles) SW (228 degrees) Rancho Cucamonga, CA - 9 km (6 miles) N (7 degrees) Upland, CA - 14 km (9 miles) NNE (31 degrees) Devore, CA - 15 km (9 miles) W (264 degrees) Fontana, CA - 16 km (10 miles) NW (321 degrees) |
| Coordinates | 34 deg. 12.5 min. N (34.208N), 117 deg. 34.0 min. W (117.567W) |
| Depth | 8.77 km (5.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=60, Nph=106, Dmin=6.2 km, Rmss=0.2 sec, Erho=0.19 km, Erzz=0.36 km, Gp=46 degrees |
| Event ID# | ci41109839 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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