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 #4: 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 3:42:33 AM (PDT) on Friday, September 12, 2025.
The magnitude 0.8 event occurred 7 km (4 miles) SE of Loma Linda, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Friday, September 12, 2025 at 3:42:33 AM (PDT)
Friday, September 12, 2025 at 10:42:33 (UTC)
Distance from Loma Linda, CA - 7 km (4 miles) SE (144 degrees)
Redlands, CA - 7 km (4 miles) SSW (208 degrees)
Moreno Valley, CA - 8 km (5 miles) N (7 degrees)
Grand Terrace, CA - 10 km (6 miles) ESE (114 degrees)
Mentone, CA - 11 km (7 miles) SW (224 degrees)
Coordinates 33 deg. 60.0 min. N (33.999N), 117 deg. 13.1 min. W (117.218W)
Depth 3.64 km (2.30 miles)
Quality Good
Location Quality Parameters Nst=54, Nph=88, Dmin=7.1 km, Rmss=0.19 sec, Erho=0.15 km, Erzz=0.55 km, Gp=29 degrees
Event ID# ci41289768
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