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 5:06:07 AM (PDT) on Monday, September 29, 2025.
The magnitude 1.1 event occurred 24 km (15 miles) N of Trona, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 1.1 - local magnitude (Ml)
Time Monday, September 29, 2025 at 5:06:07 AM (PDT)
Monday, September 29, 2025 at 12:06:07 (UTC)
Distance from Trona, CA - 24 km (15 miles) N (352 degrees)
Searles Valley, CA - 24 km (15 miles) N (358 degrees)
Little Lake, CA - 45 km (28 miles) E (83 degrees)
Ridgecrest, CA - 46 km (29 miles) NNE (30 degrees)
Coso Junction, CA - 48 km (30 miles) E (98 degrees)
Coordinates 35 deg. 58.9 min. N (35.981N), 117 deg. 24.9 min. W (117.415W)
Depth 1.72 km (1.10 miles)
Quality Fair
Location Quality Parameters Nst=25, Nph=46, Dmin=10.8 km, Rmss=0.15 sec, Erho=0.19 km, Erzz=0.39 km, Gp=82 degrees
Event ID# ci41100495
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