Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE 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 earthquake occurred at 7:49:57 PM (PDT) on Thursday, August 28, 2025.
The magnitude 1.3 event occurred 5 km (3 miles) SSE of Mentone, CA.
The hypocentral depth is 11 km ( 7 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Thursday, August 28, 2025 at 7:49:57 PM (PDT)
Friday, August 29, 2025 at 2:49:57 (UTC)
Distance from Mentone, CA - 5 km (3 miles) SSE (149 degrees)
Yucaipa, CA - 6 km (4 miles) W (266 degrees)
Calimesa, CA - 7 km (4 miles) NW (314 degrees)
Redlands, CA - 8 km (5 miles) ESE (112 degrees)
Loma Linda, CA - 14 km (9 miles) E (98 degrees)
Coordinates 34 deg. 1.8 min. N (34.030N), 117 deg. 6.3 min. W (117.106W)
Depth 11.27 km (7.00 miles)
Quality Good
Location Quality Parameters Nst=67, Nph=116, Dmin=0.9 km, Rmss=0.18 sec, Erho=0.14 km, Erzz=0.39 km, Gp=23 degrees
Event ID# ci41277840
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