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 #5: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 9:15:36 PM (PDT) on Monday, September 22, 2025.
The magnitude 1.2 event occurred 6 km (4 miles) SSW of Redlands, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.2 - local magnitude (Ml)
Time Monday, September 22, 2025 at 9:15:36 PM (PDT)
Tuesday, September 23, 2025 at 4:15:36 (UTC)
Distance from Redlands, CA - 6 km (4 miles) SSW (194 degrees)
Loma Linda, CA - 8 km (5 miles) SE (130 degrees)
Moreno Valley, CA - 9 km (6 miles) NNE (18 degrees)
Mentone, CA - 9 km (6 miles) SW (218 degrees)
Grand Terrace, CA - 11 km (7 miles) ESE (107 degrees)
Coordinates 34 deg. 0.2 min. N (34.004N), 117 deg. 11.9 min. W (117.198W)
Depth 5.85 km (3.60 miles)
Quality Good
Location Quality Parameters Nst=55, Nph=95, Dmin=6.7 km, Rmss=0.15 sec, Erho=0.13 km, Erzz=0.45 km, Gp=27 degrees
Event ID# ci40448514
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