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

A micro earthquake occurred at 6:22:51 AM (PDT) on Sunday, July 27, 2025.
The magnitude 0.9 event occurred 17 km (10 miles) WSW of Johannesburg, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 0.9 - local magnitude (Ml)
Time Sunday, July 27, 2025 at 6:22:51 AM (PDT)
Sunday, July 27, 2025 at 13:22:51 (UTC)
Distance from Johannesburg, CA - 17 km (10 miles) WSW (253 degrees)
California City, CA - 28 km (17 miles) NE (35 degrees)
Inyokern, CA - 35 km (22 miles) S (180 degrees)
Ridgecrest, CA - 35 km (22 miles) SSW (201 degrees)
Boron, CA - 40 km (25 miles) NNW (338 degrees)
Coordinates 35 deg. 19.8 min. N (35.330N), 117 deg. 48.8 min. W (117.813W)
Depth 8.50 km (5.30 miles)
Quality Good
Location Quality Parameters Nst=25, Nph=41, Dmin=7.5 km, Rmss=0.2 sec, Erho=0.31 km, Erzz=0.68 km, Gp=81 degrees
Event ID# ci41033607
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