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 11:03:19 AM (PDT) on Sunday, October 19, 2025.
The magnitude 0.9 event occurred 9 km (5 miles) NE (35 degrees) of Lake Arrowhead, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 0.9 - local magnitude (Ml)
Time Sunday, October 19, 2025 at 11:03:19 AM (PDT)
Sunday, October 19, 2025 at 18:03:19 (UTC)
Distance from Lake Arrowhead, CA - 9 km (5 miles) NE (35 degrees)
Running Springs, CA - 12 km (7 miles) NNW (348 degrees)
Crestline, CA - 16 km (10 miles) ENE (61 degrees)
Hesperia, CA - 20 km (12 miles) SE (130 degrees)
Highland, CA - 21 km (13 miles) NNE (18 degrees)
Coordinates 34 deg. 18.7 min. N (34.311N), 117 deg. 8.2 min. W (117.136W)
Depth 7.25 km (4.50 miles)
Quality Good
Location Quality Parameters Nst=42, Nph=69, Dmin=12.6 km, Rmss=0.2 sec, Erho=0.2 km, Erzz=0.68 km, Gp=61 degrees
Event ID# ci41111351
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