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 1:13:40 PM (PDT) on Monday, September 22, 2025.
The magnitude 1.3 event occurred 3 km (2 miles) WSW of Valencia, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Monday, September 22, 2025 at 1:13:40 PM (PDT)
Monday, September 22, 2025 at 20:13:40 (UTC)
Distance from Valencia, CA - 3 km (2 miles) WSW (241 degrees)
Castaic, CA - 6 km (4 miles) SSE (158 degrees)
Santa Clarita, CA - 9 km (6 miles) WNW (288 degrees)
Piru, CA - 18 km (11 miles) E (81 degrees)
Sylmar, CA - 20 km (13 miles) NW (317 degrees)
Coordinates 34 deg. 26.5 min. N (34.442N), 118 deg. 36.0 min. W (118.600W)
Depth 3.90 km (2.40 miles)
Quality Good
Location Quality Parameters Nst=32, Nph=49, Dmin=6.1 km, Rmss=0.24 sec, Erho=0.26 km, Erzz=0.82 km, Gp=32 degrees
Event ID# ci40448242
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