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 #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 1:08:20 PM (PDT) on Monday, September 22, 2025.
The magnitude 1.3 event (a probable quarry explosion) occurred 6 km (4 miles) ESE of Chula Vista, CA.
The hypocentral depth is -0.43 km (-0.30 miles).
| Magnitude | 1.3 - local magnitude (Ml) |
| Time | Monday, September 22, 2025 at 1:08:20 PM (PDT) Monday, September 22, 2025 at 20:08:20 (UTC) |
| Distance from |
Chula Vista, CA - 6 km (4 miles) ESE (107 degrees) Bonita, CA - 7 km (4 miles) SE (140 degrees) San Ysidro, CA - 9 km (5 miles) NE (41 degrees) Tijuana, B.C., MX - 10 km (6 miles) NNE (21 degrees) La Presa, CA - 11 km (7 miles) S (173 degrees) |
| Coordinates | 32 deg. 36.6 min. N (32.611N), 116 deg. 59.0 min. W (116.983W) |
| Depth | -0.43 km (-0.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=29, Nph=29, Dmin=5.0 km, Rmss=0.21 sec, Erho=0.57 km, Erzz=31.61 km, Gp=108 degrees |
| Event ID# | ci40448234 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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