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 9:43:20 PM (PDT) on Wednesday, October 15, 2025.
The magnitude 1.4 event occurred 4 km (2 miles) WSW of Fontana, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Wednesday, October 15, 2025 at 9:43:20 PM (PDT) Thursday, October 16, 2025 at 4:43:20 (UTC) |
| Distance from |
Fontana, CA - 4 km (2 miles) WSW (247 degrees) Glen Avon, CA - 8 km (5 miles) N (354 degrees) Rancho Cucamonga, CA - 9 km (6 miles) ESE (119 degrees) Bloomington, CA - 9 km (6 miles) W (280 degrees) Mira Loma, CA - 10 km (6 miles) N (11 degrees) |
| Coordinates | 34 deg. 5.1 min. N (34.085N), 117 deg. 29.7 min. W (117.495W) |
| Depth | 2.83 km (1.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=74, Nph=136, Dmin=5.4 km, Rmss=0.19 sec, Erho=0.14 km, Erzz=0.19 km, Gp=48 degrees |
| Event ID# | ci41108807 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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