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 #4: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 7:13:24 PM (PDT) on Thursday, September 11, 2025.
The magnitude 1.1 event occurred 8 km (5 miles) W of Palomar Observatory, CA.
The hypocentral depth is 15 km ( 9 miles).


Magnitude 1.1 - local magnitude (Ml)
Time Thursday, September 11, 2025 at 7:13:24 PM (PDT)
Friday, September 12, 2025 at 2:13:24 (UTC)
Distance from Palomar Observatory, CA - 8 km (5 miles) W (267 degrees)
Pala, CA - 12 km (7 miles) E (97 degrees)
Aguanga, CA - 13 km (8 miles) SW (217 degrees)
Valley Center, CA - 17 km (11 miles) NNE (28 degrees)
Lake Henshaw, CA - 21 km (13 miles) NW (306 degrees)
Coordinates 33 deg. 21.1 min. N (33.352N), 116 deg. 56.9 min. W (116.948W)
Depth 14.70 km (9.10 miles)
Quality Good
Location Quality Parameters Nst=56, Nph=93, Dmin=7.9 km, Rmss=0.16 sec, Erho=0.14 km, Erzz=0.33 km, Gp=22 degrees
Event ID# ci41289568
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