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 minor earthquake occurred at 1:28:14 AM (PDT) on Tuesday, October 28, 2025.
The magnitude 3.9 event occurred 91 km (56 miles) SSW of Alberto Oviedo Mota, B.C., MX.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 3.9 - local magnitude (Ml)
Time Tuesday, October 28, 2025 at 1:28:14 AM (PDT)
Tuesday, October 28, 2025 at 8:28:14 (UTC)
Distance from Alberto Oviedo Mota, B.C., MX - 91 km (56 miles) SSW (208 degrees)
Maneadero, B.C., MX - 93 km (58 miles) ESE (104 degrees)
Estacion Coahuila, B.C., MX - 96 km (60 miles) SW (218 degrees)
Guadalupe Victoria, B.C., MX - 99 km (62 miles) SSW (209 degrees)
Ensenada, B.C., MX - 103 km (64 miles) ESE (113 degrees)
Coordinates 31 deg. 30.4 min. N (31.507N), 115 deg. 37.2 min. W (115.620W)
Depth 3.04 km (1.90 miles)
Quality Fair
Location Quality Parameters Nst=13, Nph=21, Dmin=20.2 km, Rmss=0.15 sec, Erho=0.24 km, Erzz=1.24 km, Gp=106 degrees
Event ID# ci41321472
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