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 #2: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 0:21:12 AM (PST) on Saturday, December 13, 2025.
The magnitude 1.7 event occurred 15 km (10 miles) W of Johannesburg, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.7 - local magnitude (Ml)
Time Saturday, December 13, 2025 at 0:21:12 AM (PST)
Saturday, December 13, 2025 at 8:21:12 (UTC)
Distance from Johannesburg, CA - 15 km (10 miles) W (262 degrees)
California City, CA - 30 km (19 miles) NNE (33 degrees)
Ridgecrest, CA - 32 km (20 miles) SSW (201 degrees)
Inyokern, CA - 33 km (20 miles) S (179 degrees)
Boron, CA - 42 km (26 miles) NNW (340 degrees)
Coordinates 35 deg. 21.2 min. N (35.353N), 117 deg. 48.2 min. W (117.804W)
Depth 7.08 km (4.40 miles)
Quality Good
Location Quality Parameters Nst=30, Nph=39, Dmin=10.2 km, Rmss=0.189999998 sec, Erho=0.3 km, Erzz=1.25999999 km, Gp=56 degrees
Event ID# ci41350840
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