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 #4: 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 4:48:17 AM (PDT) on Thursday, September 4, 2025.
The magnitude 0.7 event occurred 15 km (9 miles) W of Johannesburg, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 0.7 - local magnitude (Ml)
Time Thursday, September 4, 2025 at 4:48:17 AM (PDT)
Thursday, September 4, 2025 at 11:48:17 (UTC)
Distance from Johannesburg, CA - 15 km (9 miles) W (261 degrees)
California City, CA - 31 km (19 miles) NE (35 degrees)
Ridgecrest, CA - 32 km (20 miles) SSW (200 degrees)
Inyokern, CA - 33 km (20 miles) S (177 degrees)
Boron, CA - 41 km (26 miles) NNW (342 degrees)
Coordinates 35 deg. 21.1 min. N (35.352N), 117 deg. 47.6 min. W (117.793W)
Depth 6.44 km (4.00 miles)
Quality Good
Location Quality Parameters Nst=28, Nph=48, Dmin=10.5 km, Rmss=0.15 sec, Erho=0.2 km, Erzz=0.5 km, Gp=89 degrees
Event ID# ci41282936
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