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 #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 4:24:49 PM (PDT) on Sunday, August 17, 2025.
The magnitude 1.0 event occurred 1 km (1 miles) S of Mentone, CA.
The hypocentral depth is 11 km ( 7 miles).


Magnitude 1.0 - local magnitude (Ml)
Time Sunday, August 17, 2025 at 4:24:49 PM (PDT)
Sunday, August 17, 2025 at 23:24:49 (UTC)
Distance from Mentone, CA - 1 km (1 miles) S (185 degrees)
Redlands, CA - 4 km (3 miles) E (88 degrees)
Yucaipa, CA - 9 km (6 miles) WNW (287 degrees)
Highland, CA - 10 km (6 miles) SE (140 degrees)
Calimesa, CA - 11 km (7 miles) NW (315 degrees)
Coordinates 34 deg. 3.4 min. N (34.057N), 117 deg. 8.2 min. W (117.136W)
Depth 10.73 km (6.70 miles)
Quality Good
Location Quality Parameters Nst=35, Nph=55, Dmin=3.2 km, Rmss=0.17 sec, Erho=0.2 km, Erzz=0.39 km, Gp=91 degrees
Event ID# ci37551149
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