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 11:05:06 PM (PDT) on Friday, August 1, 2025.
The magnitude 0.9 event occurred 1 km (1 miles) NE (47 degrees) of Loma Linda, CA.
The hypocentral depth is 14 km ( 9 miles).


Magnitude 0.9 - local magnitude (Ml)
Time Friday, August 1, 2025 at 11:05:06 PM (PDT)
Saturday, August 2, 2025 at 6:05:06 (UTC)
Distance from Loma Linda, CA - 1 km (1 miles) NE (47 degrees)
Grand Terrace, CA - 6 km (4 miles) ENE (67 degrees)
Colton, CA - 6 km (4 miles) ESE (110 degrees)
Redlands, CA - 6 km (4 miles) W (270 degrees)
San Bernardino, CA - 9 km (6 miles) SSE (155 degrees)
Coordinates 34 deg. 3.3 min. N (34.055N), 117 deg. 15.1 min. W (117.252W)
Depth 14.40 km (8.90 miles)
Quality Fair
Location Quality Parameters Nst=23, Nph=39, Dmin=10.4 km, Rmss=0.19 sec, Erho=0.66 km, Erzz=0.89 km, Gp=257 degrees
Event ID# ci41251240
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