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 7:40:46 AM (PDT) on Sunday, September 27, 2026.
The magnitude 2.6 event occurred 29 km (18 miles) W of Patterson, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 2.6 - duration magnitude (Md)
Time Sunday, September 27, 2026 at 7:40:46 AM (PDT)
Sunday, September 27, 2026 at 14:40:46 (UTC)
Distance from Patterson, CA - 29 km (18 miles) W (259 degrees)
East Foothills, CA - 32 km (20 miles) E (82 degrees)
Alum Rock, CA - 33 km (21 miles) E (79 degrees)
Tracy, CA - 36 km (22 miles) S (184 degrees)
Seven Trees, CA - 37 km (23 miles) ENE (66 degrees)
Coordinates 37 deg. 25.3 min. N (37.421N), 121 deg. 27.3 min. W (121.455W)
Depth 2.70 km (1.70 miles)
Quality Good
Location Quality Parameters Nst=59, Nph=53, Dmin=5.2 km, Rmss=0.12 sec, Erho=0.19 km, Erzz=0.980000019 km, Gp=77 degrees
Event ID# nc75443112
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