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 #3: 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 1:44:31 AM (PST) on Wednesday, January 21, 2026.
The magnitude 0.5 event occurred 5 km (3 miles) SW of Palomar Observatory, CA.
The hypocentral depth is 19 km (12 miles).


Magnitude 0.5 - local magnitude (Ml)
Time Wednesday, January 21, 2026 at 1:44:31 AM (PST)
Wednesday, January 21, 2026 at 9:44:31 (UTC)
Distance from Palomar Observatory, CA - 5 km (3 miles) SW (217 degrees)
Aguanga, CA - 14 km (9 miles) SSW (192 degrees)
Lake Henshaw, CA - 15 km (9 miles) NW (305 degrees)
Valley Center, CA - 17 km (11 miles) NE (49 degrees)
Pala, CA - 18 km (11 miles) ESE (106 degrees)
Coordinates 33 deg. 19.2 min. N (33.321N), 116 deg. 53.7 min. W (116.895W)
Depth 18.69 km (11.60 miles)
Quality Good
Location Quality Parameters Nst=33, Nph=53, Dmin=4.8 km, Rmss=0.15 sec, Erho=0.2 km, Erzz=0.43 km, Gp=30 degrees
Event ID# ci41166407
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