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 11:07:47 PM (PDT) on Saturday, September 6, 2025.
The magnitude 1.3 event occurred 2 km (1 miles) SSE of Brea, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Saturday, September 6, 2025 at 11:07:47 PM (PDT)
Sunday, September 7, 2025 at 6:07:47 (UTC)
Distance from Brea, CA - 2 km (1 miles) SSE (147 degrees)
Placentia, CA - 3 km (2 miles) NNW (333 degrees)
Fullerton, CA - 4 km (3 miles) ENE (60 degrees)
La Habra, CA - 7 km (4 miles) ESE (123 degrees)
Anaheim, CA - 7 km (4 miles) N (2 degrees)
Coordinates 33 deg. 54.0 min. N (33.900N), 117 deg. 53.2 min. W (117.887W)
Depth 9.35 km (5.80 miles)
Quality Good
Location Quality Parameters Nst=60, Nph=102, Dmin=4.5 km, Rmss=0.23 sec, Erho=0.23 km, Erzz=0.43 km, Gp=59 degrees
Event ID# ci41285384
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