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 10:47:44 PM (PDT) on Wednesday, September 17, 2025.
The magnitude 1.4 event occurred 30 km (19 miles) E (83 degrees) of Coso Junction, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 1.4 - local magnitude (Ml)
Time Wednesday, September 17, 2025 at 10:47:44 PM (PDT)
Thursday, September 18, 2025 at 5:47:44 (UTC)
Distance from Coso Junction, CA - 30 km (19 miles) E (83 degrees)
Little Lake, CA - 31 km (19 miles) ENE (59 degrees)
Searles Valley, CA - 40 km (25 miles) NNW (331 degrees)
Trona, CA - 41 km (25 miles) NNW (329 degrees)
Olancha, CA - 42 km (26 miles) ESE (123 degrees)
Coordinates 36 deg. 4.7 min. N (36.079N), 117 deg. 36.9 min. W (117.616W)
Depth 1.60 km (1.00 miles)
Quality Fair
Location Quality Parameters Nst=27, Nph=52, Dmin=11.7 km, Rmss=0.17 sec, Erho=0.22 km, Erzz=0.34 km, Gp=66 degrees
Event ID# ci40442778
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