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 9:07:56 AM (PDT) on Thursday, September 4, 2025.
The magnitude 1.1 event occurred 4 km (3 miles) SE of Dana Point, CA.
The hypocentral depth is 7 km ( 5 miles).


Magnitude 1.1 - local magnitude (Ml)
Time Thursday, September 4, 2025 at 9:07:56 AM (PDT)
Thursday, September 4, 2025 at 16:07:56 (UTC)
Distance from Dana Point, CA - 4 km (3 miles) SE (134 degrees)
San Clemente, CA - 5 km (3 miles) WNW (286 degrees)
San Juan Capistrano, CA - 7 km (4 miles) S (181 degrees)
Laguna Niguel, CA - 10 km (6 miles) SSE (156 degrees)
Ladera Ranch, CA - 15 km (9 miles) S (190 degrees)
Coordinates 33 deg. 26.4 min. N (33.440N), 117 deg. 39.8 min. W (117.664W)
Depth 7.38 km (4.60 miles)
Quality Fair
Location Quality Parameters Nst=24, Nph=44, Dmin=16.4 km, Rmss=0.16 sec, Erho=0.52 km, Erzz=0.92 km, Gp=215 degrees
Event ID# ci41283224
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