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 11:43:40 AM (PDT) on Wednesday, July 23, 2025.
The magnitude 1.0 event (a probable quarry explosion) occurred 13 km (8 miles) SE of Tehachapi, CA.
The hypocentral depth is -1 km (-1 miles).


Magnitude 1.0 - local magnitude (Ml)
Time Wednesday, July 23, 2025 at 11:43:40 AM (PDT)
Wednesday, July 23, 2025 at 18:43:40 (UTC)
Distance from Tehachapi, CA - 13 km (8 miles) SE (129 degrees)
Mojave, CA - 15 km (9 miles) W (274 degrees)
Rosamond, CA - 27 km (17 miles) NW (324 degrees)
California City, CA - 33 km (21 miles) WSW (258 degrees)
Neenach, CA - 40 km (25 miles) NE (37 degrees)
Coordinates 35 deg. 3.7 min. N (35.062N), 118 deg. 20.4 min. W (118.341W)
Depth -0.98 km (-0.60 miles)
Quality Fair
Location Quality Parameters Nst=22, Nph=22, Dmin=7.9 km, Rmss=0.14 sec, Erho=0.29 km, Erzz=31.61 km, Gp=44 degrees
Event ID# ci41030151
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