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 2:42:09 PM (PDT) on Thursday, September 4, 2025.
The magnitude 1.4 event (a probable quarry explosion) occurred 4 km (3 miles) SE of Home Gardens, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Thursday, September 4, 2025 at 2:42:09 PM (PDT) Thursday, September 4, 2025 at 21:42:09 (UTC) |
| Distance from |
Home Gardens, CA - 4 km (3 miles) SE (145 degrees) Corona, CA - 7 km (5 miles) ESE (112 degrees) Norco, CA - 11 km (7 miles) SSE (152 degrees) Woodcrest, CA - 13 km (8 miles) WSW (252 degrees) Pedley, CA - 15 km (9 miles) S (186 degrees) |
| Coordinates | 33 deg. 50.7 min. N (33.845N), 117 deg. 29.6 min. W (117.493W) |
| Depth | 1.95 km (1.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=33, Nph=49, Dmin=5.4 km, Rmss=0.17 sec, Erho=0.21 km, Erzz=0.27 km, Gp=50 degrees |
| Event ID# | ci41283528 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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