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

A micro earthquake occurred at 8:00:34 AM (PDT) on Thursday, October 9, 2025.
The magnitude 2.1 event occurred 4 km (3 miles) S of Redlands, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 2.1 - local magnitude (Ml)
Time Thursday, October 9, 2025 at 8:00:34 AM (PDT)
Thursday, October 9, 2025 at 15:00:34 (UTC)
Distance from Redlands, CA - 4 km (3 miles) S (187 degrees)
Loma Linda, CA - 8 km (5 miles) ESE (118 degrees)
Mentone, CA - 8 km (5 miles) SW (219 degrees)
Moreno Valley, CA - 11 km (7 miles) NNE (20 degrees)
Grand Terrace, CA - 12 km (7 miles) E (100 degrees)
Coordinates 34 deg. 0.9 min. N (34.016N), 117 deg. 11.3 min. W (117.188W)
Depth 6.99 km (4.30 miles)
Quality Good
Location Quality Parameters Nst=94, Nph=163, Dmin=7.3 km, Rmss=0.17 sec, Erho=0.1 km, Erzz=0.31 km, Gp=14 degrees
Event ID# ci41105751
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