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 12:45:52 PM (PDT) on Thursday, August 20, 2026.
The magnitude 1.3 event (a probable quarry explosion) occurred 6 km (3 miles) N of Lake Elsinore, CA.
The hypocentral depth is -0.50 km (-0.30 miles).
| Magnitude | 1.3 - local magnitude (Ml) |
| Time | Thursday, August 20, 2026 at 12:45:52 PM (PDT) Thursday, August 20, 2026 at 19:45:52 (UTC) |
| Distance from |
Lake Elsinore, CA - 6 km (3 miles) N (355 degrees) Good Hope, CA - 8 km (5 miles) SW (230 degrees) Lakeland Village, CA - 9 km (6 miles) N (7 degrees) Perris, CA - 12 km (7 miles) SW (233 degrees) Mead Valley, CA - 13 km (8 miles) SSW (195 degrees) |
| Coordinates | 33 deg. 43.1 min. N (33.718N), 117 deg. 19.9 min. W (117.332W) |
| Depth | -0.50 km (-0.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=26, Nph=26, Dmin=4.9 km, Rmss=0.23 sec, Erho=0.43 km, Erzz=31.61 km, Gp=60 degrees |
| Event ID# | ci41531360 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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