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

A micro earthquake occurred at 11:11:54 AM (PDT) on Sunday, September 28, 2025.
The magnitude 1.9 event occurred 23 km (14 miles) NNE (13 degrees) of Trona, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 1.9 - local magnitude (Ml)
Time Sunday, September 28, 2025 at 11:11:54 AM (PDT)
Sunday, September 28, 2025 at 18:11:54 (UTC)
Distance from Trona, CA - 23 km (14 miles) NNE (13 degrees)
Searles Valley, CA - 23 km (14 miles) NNE (19 degrees)
Ridgecrest, CA - 50 km (31 miles) NE (40 degrees)
Little Lake, CA - 53 km (33 miles) E (86 degrees)
Coso Junction, CA - 57 km (35 miles) E (99 degrees)
Coordinates 35 deg. 57.9 min. N (35.964N), 117 deg. 19.3 min. W (117.322W)
Depth 3.57 km (2.20 miles)
Quality Good
Location Quality Parameters Nst=35, Nph=66, Dmin=8.8 km, Rmss=0.16 sec, Erho=0.18 km, Erzz=0.74 km, Gp=69 degrees
Event ID# ci41100247
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