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 3:39:10 PM (PDT) on Tuesday, July 28, 2026.
The magnitude 2.3 event occurred 7 km (4 miles) ENE (60 degrees) of East Foothills, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 2.3 - duration magnitude (Md)
Time Tuesday, July 28, 2026 at 3:39:10 PM (PDT)
Tuesday, July 28, 2026 at 22:39:10 (UTC)
Distance from East Foothills, CA - 7 km (4 miles) ENE (60 degrees)
Alum Rock, CA - 8 km (5 miles) NE (53 degrees)
Milpitas, CA - 14 km (9 miles) E (98 degrees)
San Jose, CA - 15 km (9 miles) ENE (58 degrees)
Seven Trees, CA - 16 km (10 miles) NNE (29 degrees)
Coordinates 37 deg. 24.6 min. N (37.410N), 121 deg. 45.2 min. W (121.753W)
Depth 8.34 km (5.20 miles)
Quality Excellent
Location Quality Parameters Nst=64, Nph=59, Dmin=6.1 km, Rmss=0.06 sec, Erho=0.12 km, Erzz=0.370000005 km, Gp=33 degrees
Event ID# nc75407482
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