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 7:54:23 PM (PDT) on Thursday, September 18, 2025.
The magnitude 0.6 event occurred 7 km (5 miles) W of Palomar Observatory, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 0.6 - local magnitude (Ml)
Time Thursday, September 18, 2025 at 7:54:23 PM (PDT)
Friday, September 19, 2025 at 2:54:23 (UTC)
Distance from Palomar Observatory, CA - 7 km (5 miles) W (271 degrees)
Aguanga, CA - 12 km (7 miles) SW (217 degrees)
Pala, CA - 12 km (8 miles) E (94 degrees)
Valley Center, CA - 18 km (11 miles) NNE (29 degrees)
Lake Henshaw, CA - 21 km (13 miles) NW (308 degrees)
Coordinates 33 deg. 21.4 min. N (33.357N), 116 deg. 56.6 min. W (116.943W)
Depth 5.72 km (3.60 miles)
Quality Good
Location Quality Parameters Nst=33, Nph=60, Dmin=7.5 km, Rmss=0.19 sec, Erho=0.2 km, Erzz=0.76 km, Gp=42 degrees
Event ID# ci40445658
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