Recent Earthquakes in California and Nevada


== PRELIMINARY EVENT REPORT ==

Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California


Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro quarry occurred at 10:00:33 AM (PDT) on Tuesday, October 7, 2025.
The magnitude 1.1 event (a probable quarry explosion) occurred 11 km (7 miles) ENE (60 degrees) of Adelanto, CA.
The hypocentral depth is -1 km (-0.50 miles).


Magnitude 1.1 - local magnitude (Ml)
Time Tuesday, October 7, 2025 at 10:00:33 AM (PDT)
Tuesday, October 7, 2025 at 17:00:33 (UTC)
Distance from Adelanto, CA - 11 km (7 miles) ENE (60 degrees)
Victorville, CA - 11 km (7 miles) N (353 degrees)
Mountain View Acres, CA - 16 km (10 miles) NNE (15 degrees)
Apple Valley, CA - 18 km (11 miles) NW (323 degrees)
Hesperia, CA - 23 km (14 miles) N (359 degrees)
Coordinates 34 deg. 37.9 min. N (34.632N), 117 deg. 18.3 min. W (117.306W)
Depth -0.87 km (-0.50 miles)
Quality Fair
Location Quality Parameters Nst=33, Nph=33, Dmin=8.2 km, Rmss=0.21 sec, Erho=0.36 km, Erzz=31.61 km, Gp=65 degrees
Event ID# ci41104655
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