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 #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 5:05:58 AM (PST) on Friday, November 21, 2025.
The magnitude 1.0 event occurred 7 km (4 miles) N of Fontana, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Friday, November 21, 2025 at 5:05:58 AM (PST) Friday, November 21, 2025 at 13:05:58 (UTC) |
| Distance from |
Fontana, CA - 7 km (4 miles) N (351 degrees) Devore, CA - 9 km (6 miles) SW (222 degrees) Rancho Cucamonga, CA - 11 km (7 miles) ENE (68 degrees) Lytle Creek, CA - 11 km (7 miles) SSE (167 degrees) Rialto, CA - 11 km (7 miles) WNW (303 degrees) |
| Coordinates | 34 deg. 9.6 min. N (34.160N), 117 deg. 28.2 min. W (117.471W) |
| Depth | 6.75 km (4.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=50, Nph=79, Dmin=6.0 km, Rmss=0.17 sec, Erho=0.18 km, Erzz=0.34 km, Gp=43 degrees |
| Event ID# | ci41125415 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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