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

A micro earthquake occurred at 10:33:08 PM (PDT) on Tuesday, October 28, 2025.
The magnitude 0.8 event occurred 15 km (9 miles) W of Johannesburg, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Tuesday, October 28, 2025 at 10:33:08 PM (PDT)
Wednesday, October 29, 2025 at 5:33:08 (UTC)
Distance from Johannesburg, CA - 15 km (9 miles) W (260 degrees)
California City, CA - 31 km (19 miles) NE (35 degrees)
Ridgecrest, CA - 32 km (20 miles) SSW (199 degrees)
Inyokern, CA - 33 km (21 miles) S (177 degrees)
Boron, CA - 41 km (26 miles) NNW (342 degrees)
Coordinates 35 deg. 21.0 min. N (35.350N), 117 deg. 47.6 min. W (117.793W)
Depth 5.22 km (3.20 miles)
Quality Good
Location Quality Parameters Nst=32, Nph=54, Dmin=10.4 km, Rmss=0.17 sec, Erho=0.2 km, Erzz=0.86 km, Gp=78 degrees
Event ID# ci41321968
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