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 4:32:29 PM (PDT) on Thursday, August 14, 2025.
The magnitude 1.3 event (a probable quarry explosion) occurred 5 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 14, 2025 at 4:32:29 PM (PDT)
Thursday, August 14, 2025 at 23:32:29 (UTC)
Distance from Lake Elsinore, CA - 5 km (3 miles) N (356 degrees)
Good Hope, CA - 8 km (5 miles) SW (227 degrees)
Lakeland Village, CA - 9 km (5 miles) N (8 degrees)
Perris, CA - 12 km (8 miles) SW (232 degrees)
Mead Valley, CA - 14 km (8 miles) SSW (194 degrees)
Coordinates 33 deg. 42.9 min. N (33.715N), 117 deg. 19.9 min. W (117.332W)
Depth -0.50 km (-0.30 miles)
Quality Good
Location Quality Parameters Nst=28, Nph=37, Dmin=4.4 km, Rmss=0.19 sec, Erho=0.28 km, Erzz=31.61 km, Gp=52 degrees
Event ID# ci41261024
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