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 event has been reviewed by a seismologist.

A micro earthquake occurred at 8:19:15 AM (PDT) on Tuesday, September 9, 2025.
The magnitude 2.6 event occurred 14 km (9 miles) S of Ridgemark, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 2.6 - local magnitude (Ml)
Time Tuesday, September 9, 2025 at 8:19:15 AM (PDT)
Tuesday, September 9, 2025 at 15:19:15 (UTC)
Distance from Ridgemark, CA - 14 km (9 miles) S (174 degrees)
Hollister, CA - 18 km (11 miles) SSE (166 degrees)
Chualar, CA - 20 km (12 miles) NE (50 degrees)
Gonzales, CA - 22 km (13 miles) NNE (23 degrees)
San Juan Bautista, CA - 24 km (15 miles) SE (136 degrees)
Coordinates 36 deg. 41.2 min. N (36.686N), 121 deg. 21.0 min. W (121.349W)
Depth 2.55 km (1.60 miles)
Quality Good
Location Quality Parameters Nst=81, Nph=89, Dmin=3.8 km, Rmss=0.44 sec, Erho=0.54 km, Erzz=1.407 km, Gp=32 degrees
Event ID# nc75235502
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