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 1:25:20 AM (PDT) on Saturday, September 13, 2025.
The magnitude 1.4 event occurred 6 km (4 miles) NNE (26 degrees) of Simi Valley, CA.
The hypocentral depth is 26 km (16 miles).


Magnitude 1.4 - local magnitude (Ml)
Time Saturday, September 13, 2025 at 1:25:20 AM (PDT)
Saturday, September 13, 2025 at 8:25:20 (UTC)
Distance from Simi Valley, CA - 6 km (4 miles) NNE (26 degrees)
Chatsworth, CA - 12 km (8 miles) NW (306 degrees)
Piru, CA - 13 km (8 miles) SE (144 degrees)
West Hills, CA - 15 km (9 miles) NNW (336 degrees)
Moorpark, CA - 16 km (10 miles) ENE (76 degrees)
Coordinates 34 deg. 19.2 min. N (34.320N), 118 deg. 42.6 min. W (118.710W)
Depth 26.19 km (16.30 miles)
Quality Good
Location Quality Parameters Nst=48, Nph=82, Dmin=9.1 km, Rmss=0.22 sec, Erho=0.25 km, Erzz=0.45 km, Gp=30 degrees
Event ID# ci41290480
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