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

A micro earthquake occurred at 0:52:35 AM (PDT) on Friday, August 1, 2025.
The magnitude 0.5 event occurred 8 km (5 miles) W of Palomar Observatory, CA.
The hypocentral depth is 14 km ( 9 miles).


Magnitude 0.5 - local magnitude (Ml)
Time Friday, August 1, 2025 at 0:52:35 AM (PDT)
Friday, August 1, 2025 at 7:52:35 (UTC)
Distance from Palomar Observatory, CA - 8 km (5 miles) W (269 degrees)
Pala, CA - 12 km (7 miles) E (96 degrees)
Aguanga, CA - 13 km (8 miles) SW (218 degrees)
Valley Center, CA - 17 km (11 miles) NNE (28 degrees)
Lake Henshaw, CA - 21 km (13 miles) NW (306 degrees)
Coordinates 33 deg. 21.3 min. N (33.354N), 116 deg. 57.0 min. W (116.949W)
Depth 13.85 km (8.60 miles)
Quality Good
Location Quality Parameters Nst=27, Nph=50, Dmin=8.1 km, Rmss=0.16 sec, Erho=0.2 km, Erzz=0.51 km, Gp=44 degrees
Event ID# ci41250336
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