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 micro earthquake occurred at 2:44:00 PM (PDT) on Sunday, October 5, 2025.
The magnitude 1.0 event occurred 14 km (9 miles) W of Johannesburg, CA.
The hypocentral depth is 4 km ( 3 miles).


Magnitude 1.0 - local magnitude (Ml)
Time Sunday, October 5, 2025 at 2:44:00 PM (PDT)
Sunday, October 5, 2025 at 21:44:00 (UTC)
Distance from Johannesburg, CA - 14 km (9 miles) W (263 degrees)
California City, CA - 31 km (19 miles) NE (34 degrees)
Ridgecrest, CA - 31 km (19 miles) SSW (200 degrees)
Inyokern, CA - 32 km (20 miles) S (177 degrees)
Boron, CA - 42 km (26 miles) NNW (342 degrees)
Coordinates 35 deg. 21.4 min. N (35.357N), 117 deg. 47.5 min. W (117.791W)
Depth 4.16 km (2.60 miles)
Quality Fair
Location Quality Parameters Nst=38, Nph=66, Dmin=11.1 km, Rmss=0.18 sec, Erho=0.19 km, Erzz=0.5 km, Gp=50 degrees
Event ID# ci41103287
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