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 #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 9:28:59 PM (PDT) on Friday, September 19, 2025.
The magnitude 0.8 event occurred 4 km (2 miles) N (8 degrees) of Lake Henshaw, CA.
The hypocentral depth is 6 km ( 3 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Friday, September 19, 2025 at 9:28:59 PM (PDT)
Saturday, September 20, 2025 at 4:28:59 (UTC)
Distance from Lake Henshaw, CA - 4 km (2 miles) N (8 degrees)
Warner Springs, CA - 12 km (7 miles) W (266 degrees)
Palomar Observatory, CA - 13 km (8 miles) SE (133 degrees)
Aguanga, CA - 21 km (13 miles) SSE (152 degrees)
Valley Center, CA - 26 km (16 miles) ENE (76 degrees)
Coordinates 33 deg. 16.4 min. N (33.274N), 116 deg. 45.5 min. W (116.758W)
Depth 5.53 km (3.40 miles)
Quality Good
Location Quality Parameters Nst=44, Nph=78, Dmin=4.2 km, Rmss=0.17 sec, Erho=0.15 km, Erzz=0.44 km, Gp=23 degrees
Event ID# ci40446570
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