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

A micro earthquake occurred at 11:37:02 AM (PDT) on Saturday, October 4, 2025.
The magnitude 1.6 event occurred 21 km (13 miles) SW of Westmorland, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.6 - local magnitude (Ml)
Time Saturday, October 4, 2025 at 11:37:02 AM (PDT)
Saturday, October 4, 2025 at 18:37:02 (UTC)
Distance from Westmorland, CA - 21 km (13 miles) SW (232 degrees)
Imperial, CA - 23 km (14 miles) WNW (290 degrees)
Brawley, CA - 26 km (16 miles) WSW (256 degrees)
Ocotillo, CA - 27 km (17 miles) NE (41 degrees)
El Centro, CA - 27 km (17 miles) WNW (303 degrees)
Coordinates 32 deg. 55.2 min. N (32.919N), 115 deg. 48.2 min. W (115.803W)
Depth 8.90 km (5.50 miles)
Quality Good
Location Quality Parameters Nst=42, Nph=73, Dmin=2.9 km, Rmss=0.24 sec, Erho=0.22 km, Erzz=0.46 km, Gp=31 degrees
Event ID# ci41102591
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