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 event has been reviewed by a seismologist.

A micro earthquake occurred at 9:13:55 PM (PDT) on Wednesday, July 29, 2026.
The magnitude 1.2 event occurred 3 km (2 miles) E (81 degrees) of Colton, CA.
The hypocentral depth is 16 km (10 miles).


Magnitude 1.2 - local magnitude (Ml)
Time Wednesday, July 29, 2026 at 9:13:55 PM (PDT)
Thursday, July 30, 2026 at 4:13:55 (UTC)
Distance from Colton, CA - 3 km (2 miles) E (81 degrees)
Loma Linda, CA - 4 km (2 miles) NNW (331 degrees)
Grand Terrace, CA - 6 km (4 miles) NNE (31 degrees)
San Bernardino, CA - 6 km (4 miles) S (169 degrees)
Rialto, CA - 9 km (5 miles) ESE (111 degrees)
Coordinates 34 deg. 4.7 min. N (34.078N), 117 deg. 16.9 min. W (117.281W)
Depth 15.94 km (9.90 miles)
Quality Good
Location Quality Parameters Nst=70, Nph=124, Dmin=3.0 km, Rmss=0.17 sec, Erho=0.13 km, Erzz=0.35 km, Gp=21 degrees
Event ID# ci40663466
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