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

A micro quarry occurred at 11:01:48 AM (PDT) on Thursday, October 8, 2026.
The magnitude 1.0 event (a probable quarry explosion) occurred 11 km (7 miles) ENE (59 degrees) of Adelanto, CA.
The hypocentral depth is -1 km (-0.50 miles).


Magnitude 1.0 - local magnitude (Ml)
Time Thursday, October 8, 2026 at 11:01:48 AM (PDT)
Thursday, October 8, 2026 at 18:01:48 (UTC)
Distance from Adelanto, CA - 11 km (7 miles) ENE (59 degrees)
Victorville, CA - 11 km (7 miles) N (355 degrees)
Mountain View Acres, CA - 16 km (10 miles) NNE (15 degrees)
Apple Valley, CA - 18 km (11 miles) NW (325 degrees)
Hesperia, CA - 23 km (15 miles) N (360 degrees)
Coordinates 34 deg. 38.2 min. N (34.636N), 117 deg. 18.1 min. W (117.302W)
Depth -0.87 km (-0.50 miles)
Quality Fair
Location Quality Parameters Nst=23, Nph=25, Dmin=8.8 km, Rmss=0.19 sec, Erho=0.39 km, Erzz=31.61 km, Gp=91 degrees
Event ID# ci41345151
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