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 5:35:04 PM (PDT) on Friday, September 12, 2025.
The magnitude 2.5 event occurred 7 km (4 miles) NNE (23 degrees) of Simi Valley, CA.
The hypocentral depth is 26 km (16 miles).


Magnitude 2.5 - local magnitude (Ml)
Time Friday, September 12, 2025 at 5:35:04 PM (PDT)
Saturday, September 13, 2025 at 0:35:04 (UTC)
Distance from Simi Valley, CA - 7 km (4 miles) NNE (23 degrees)
Piru, CA - 12 km (8 miles) SE (143 degrees)
Chatsworth, CA - 13 km (8 miles) NW (308 degrees)
Moorpark, CA - 16 km (10 miles) ENE (74 degrees)
West Hills, CA - 16 km (10 miles) NNW (337 degrees)
Coordinates 34 deg. 19.6 min. N (34.326N), 118 deg. 42.7 min. W (118.712W)
Depth 26.09 km (16.20 miles)
Quality Good
Location Quality Parameters Nst=112, Nph=186, Dmin=6.8 km, Rmss=0.21 sec, Erho=0.14 km, Erzz=0.32 km, Gp=15 degrees
Event ID# ci41290312
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