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 4:34:24 AM (PDT) on Saturday, September 6, 2025.
The magnitude 1.0 event occurred 4 km (2 miles) ESE of Loma Linda, CA.
The hypocentral depth is 17 km (10 miles).


Magnitude 1.0 - local magnitude (Ml)
Time Saturday, September 6, 2025 at 4:34:24 AM (PDT)
Saturday, September 6, 2025 at 11:34:24 (UTC)
Distance from Loma Linda, CA - 4 km (2 miles) ESE (121 degrees)
Redlands, CA - 5 km (3 miles) SW (235 degrees)
Grand Terrace, CA - 8 km (5 miles) E (93 degrees)
Colton, CA - 9 km (6 miles) ESE (121 degrees)
Mentone, CA - 9 km (6 miles) WSW (242 degrees)
Coordinates 34 deg. 1.8 min. N (34.031N), 117 deg. 13.5 min. W (117.225W)
Depth 16.60 km (10.30 miles)
Quality Fair
Location Quality Parameters Nst=15, Nph=28, Dmin=18.8 km, Rmss=0.14 sec, Erho=0.69 km, Erzz=1.2 km, Gp=248 degrees
Event ID# ci41284632
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