Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT 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 is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro quarry occurred at 1:56:10 PM (PDT) on Thursday, October 9, 2025.
The magnitude 1.4 event (a probable quarry explosion) occurred 6 km (4 miles) SSE of Home Gardens, CA.
The hypocentral depth is 18 km (11 miles).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Thursday, October 9, 2025 at 1:56:10 PM (PDT) Thursday, October 9, 2025 at 20:56:10 (UTC) |
| Distance from |
Home Gardens, CA - 6 km (4 miles) SSE (154 degrees) Corona, CA - 8 km (5 miles) SE (124 degrees) Norco, CA - 13 km (8 miles) SSE (155 degrees) Woodcrest, CA - 14 km (9 miles) WSW (244 degrees) Pedley, CA - 16 km (10 miles) S (185 degrees) |
| Coordinates | 33 deg. 49.7 min. N (33.828N), 117 deg. 29.5 min. W (117.492W) |
| Depth | 17.82 km (11.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=24, Nph=26, Dmin=13.1 km, Rmss=0.29 sec, Erho=0.93 km, Erzz=1.49 km, Gp=97 degrees |
| Event ID# | ci41105903 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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