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 4:27:53 PM (PDT) on Monday, September 8, 2025.
The magnitude 1.4 event (a probable quarry explosion) occurred 5 km (3 miles) NNW of Lakeside, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Monday, September 8, 2025 at 4:27:53 PM (PDT) Monday, September 8, 2025 at 23:27:53 (UTC) |
| Distance from |
Lakeside, CA - 5 km (3 miles) NNW (333 degrees) Santee, CA - 7 km (5 miles) NNE (18 degrees) Winter Gardens, CA - 8 km (5 miles) N (349 degrees) Bostonia, CA - 10 km (7 miles) N (353 degrees) Poway, CA - 11 km (7 miles) SE (130 degrees) |
| Coordinates | 32 deg. 54.1 min. N (32.901N), 116 deg. 57.0 min. W (116.949W) |
| Depth | 5.59 km (3.50 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=34, Nph=56, Dmin=7.2 km, Rmss=0.2 sec, Erho=0.24 km, Erzz=0.53 km, Gp=66 degrees |
| Event ID# | ci41286552 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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