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 12:49:04 PM (PDT) on Saturday, September 20, 2025.
The magnitude 0.8 event occurred 6 km (4 miles) SSE of Lake Henshaw, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Saturday, September 20, 2025 at 12:49:04 PM (PDT)
Saturday, September 20, 2025 at 19:49:04 (UTC)
Distance from Lake Henshaw, CA - 6 km (4 miles) SSE (147 degrees)
Warner Springs, CA - 13 km (8 miles) SW (224 degrees)
Julian, CA - 18 km (11 miles) NW (318 degrees)
Palomar Observatory, CA - 21 km (13 miles) SE (144 degrees)
Ramona, CA - 22 km (13 miles) NE (36 degrees)
Coordinates 33 deg. 11.9 min. N (33.199N), 116 deg. 43.8 min. W (116.730W)
Depth 8.81 km (5.50 miles)
Quality Good
Location Quality Parameters Nst=38, Nph=70, Dmin=4.9 km, Rmss=0.18 sec, Erho=0.17 km, Erzz=0.53 km, Gp=36 degrees
Event ID# ci40447138
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