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 3:43:15 PM (PDT) on Friday, August 7, 2026.
The magnitude 1.5 event (a probable quarry explosion) occurred 7 km (4 miles) NNW of Lakeside, CA.
The hypocentral depth is -0.19 km (-0.10 miles).
| Magnitude | 1.5 - local magnitude (Ml) |
| Time | Friday, August 7, 2026 at 3:43:15 PM (PDT) Friday, August 7, 2026 at 22:43:15 (UTC) |
| Distance from |
Lakeside, CA - 7 km (4 miles) NNW (347 degrees) Winter Gardens, CA - 9 km (6 miles) N (357 degrees) Santee, CA - 9 km (6 miles) NNE (21 degrees) Poway, CA - 11 km (7 miles) ESE (120 degrees) Bostonia, CA - 12 km (7 miles) N (359 degrees) |
| Coordinates | 32 deg. 54.9 min. N (32.915N), 116 deg. 56.3 min. W (116.939W) |
| Depth | -0.19 km (-0.10 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=27, Nph=27, Dmin=9.0 km, Rmss=0.29 sec, Erho=0.58 km, Erzz=31.61 km, Gp=66 degrees |
| Event ID# | ci40668370 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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