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 7:46:47 AM (PDT) on Saturday, September 20, 2025.
The magnitude 1.5 event occurred 32 km (20 miles) N of Trona, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.5 - local magnitude (Ml)
Time Saturday, September 20, 2025 at 7:46:47 AM (PDT)
Saturday, September 20, 2025 at 14:46:47 (UTC)
Distance from Trona, CA - 32 km (20 miles) N (355 degrees)
Searles Valley, CA - 32 km (20 miles) N (359 degrees)
Little Lake, CA - 46 km (29 miles) ENE (74 degrees)
Coso Junction, CA - 48 km (30 miles) E (89 degrees)
Ridgecrest, CA - 54 km (33 miles) NNE (26 degrees)
Coordinates 36 deg. 3.2 min. N (36.053N), 117 deg. 24.7 min. W (117.412W)
Depth 5.08 km (3.20 miles)
Quality Good
Location Quality Parameters Nst=27, Nph=51, Dmin=6.9 km, Rmss=0.18 sec, Erho=0.25 km, Erzz=0.65 km, Gp=78 degrees
Event ID# ci40446962
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