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 #3: 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 9:04:04 PM (PST) on Monday, December 22, 2025.
The magnitude 1.2 event occurred 15 km (9 miles) WSW of Johannesburg, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.2 - local magnitude (Ml)
Time Monday, December 22, 2025 at 9:04:04 PM (PST)
Tuesday, December 23, 2025 at 5:04:04 (UTC)
Distance from Johannesburg, CA - 15 km (9 miles) WSW (255 degrees)
California City, CA - 29 km (18 miles) NE (36 degrees)
Ridgecrest, CA - 33 km (21 miles) SSW (199 degrees)
Inyokern, CA - 34 km (21 miles) S (177 degrees)
Boron, CA - 40 km (25 miles) NNW (341 degrees)
Coordinates 35 deg. 20.3 min. N (35.339N), 117 deg. 47.7 min. W (117.795W)
Depth 5.90 km (3.70 miles)
Quality Good
Location Quality Parameters Nst=35, Nph=63, Dmin=9.2 km, Rmss=0.17 sec, Erho=0.19 km, Erzz=0.6 km, Gp=81 degrees
Event ID# ci41145919
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