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 #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 2:13:46 PM (PDT) on Tuesday, August 19, 2025.
The magnitude 1.5 event (a probable quarry explosion) occurred 6 km (4 miles) N of Lakeside, CA.
The hypocentral depth is -0.19 km (-0.10 miles).
| Magnitude | 1.5 - local magnitude (Ml) |
| Time | Tuesday, August 19, 2025 at 2:13:46 PM (PDT) Tuesday, August 19, 2025 at 21:13:46 (UTC) |
| Distance from |
Lakeside, CA - 6 km (4 miles) N (349 degrees) Winter Gardens, CA - 9 km (6 miles) N (359 degrees) Santee, CA - 9 km (6 miles) NNE (24 degrees) Poway, CA - 11 km (7 miles) ESE (121 degrees) Bostonia, CA - 12 km (7 miles) N (1 degrees) |
| Coordinates | 32 deg. 54.8 min. N (32.913N), 116 deg. 56.1 min. W (116.935W) |
| Depth | -0.19 km (-0.10 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=39, Nph=39, Dmin=8.7 km, Rmss=0.24 sec, Erho=0.36 km, Erzz=31.61 km, Gp=56 degrees |
| Event ID# | ci40403290 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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