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 event has been reviewed by a seismologist.
A micro quarry occurred at 11:27:52 AM (PDT) on Wednesday, March 18, 2026.
The magnitude 0.8 event (a probable quarry explosion) occurred 6 km (4 miles) NNW of Lakeside, CA.
The hypocentral depth is -0.19 km (-0.10 miles).
| Magnitude | 0.8 - local magnitude (Ml) |
| Time | Wednesday, March 18, 2026 at 11:27:52 AM (PDT) Wednesday, March 18, 2026 at 18:27:52 (UTC) |
| Distance from |
Lakeside, CA - 6 km (4 miles) NNW (346 degrees) Santee, CA - 8 km (5 miles) NNE (24 degrees) Winter Gardens, CA - 9 km (5 miles) N (358 degrees) Bostonia, CA - 11 km (7 miles) N (360 degrees) Poway, CA - 11 km (7 miles) SE (124 degrees) |
| Coordinates | 32 deg. 54.5 min. N (32.908N), 116 deg. 56.2 min. W (116.937W) |
| Depth | -0.19 km (-0.10 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=26, Nph=28, Dmin=8.8 km, Rmss=0.29 sec, Erho=0.57 km, Erzz=31.61 km, Gp=81 degrees |
| Event ID# | ci41207151 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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