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

A micro earthquake occurred at 5:34:28 PM (PDT) on Wednesday, August 20, 2025.
The magnitude 1.3 event occurred 3 km (2 miles) SSE of Redlands, CA.
The hypocentral depth is 15 km ( 9 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Wednesday, August 20, 2025 at 5:34:28 PM (PDT)
Thursday, August 21, 2025 at 0:34:28 (UTC)
Distance from Redlands, CA - 3 km (2 miles) SSE (152 degrees)
Mentone, CA - 5 km (3 miles) SW (217 degrees)
Loma Linda, CA - 9 km (5 miles) E (101 degrees)
Highland, CA - 11 km (7 miles) SSE (160 degrees)
Yucaipa, CA - 12 km (7 miles) W (270 degrees)
Coordinates 34 deg. 2.0 min. N (34.033N), 117 deg. 10.1 min. W (117.168W)
Depth 14.82 km (9.20 miles)
Quality Good
Location Quality Parameters Nst=64, Nph=115, Dmin=5.1 km, Rmss=0.16 sec, Erho=0.13 km, Erzz=0.24 km, Gp=27 degrees
Event ID# ci41270224
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