Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #0: 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 1:54:37 AM (PST) on Friday, December 26, 2025.
The magnitude 1.3 event occurred 5 km (3 miles) SW of Ridgemark, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.3 - duration magnitude (Md)
Time Friday, December 26, 2025 at 1:54:37 AM (PST)
Friday, December 26, 2025 at 9:54:37 (UTC)
Distance from Ridgemark, CA - 5 km (3 miles) SW (228 degrees)
Hollister, CA - 7 km (5 miles) S (187 degrees)
San Juan Bautista, CA - 14 km (8 miles) ESE (122 degrees)
Prunedale, CA - 23 km (14 miles) E (88 degrees)
Salinas, CA - 24 km (15 miles) ENE (62 degrees)
Coordinates 36 deg. 46.9 min. N (36.782N), 121 deg. 24.5 min. W (121.409W)
Depth 5.32 km (3.30 miles)
Quality Good
Location Quality Parameters Nst=8, Nph=8, Dmin=4.0 km, Rmss=0.06 sec, Erho=0.52 km, Erzz=0.699999988 km, Gp=100 degrees
Event ID# nc75286521
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