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 2:16:41 AM (PDT) on Saturday, October 18, 2025.
The magnitude 2.8 event occurred 10 km (6 miles) ESE of East Foothills, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 2.8 - local magnitude (Ml)
Time Saturday, October 18, 2025 at 2:16:41 AM (PDT)
Saturday, October 18, 2025 at 9:16:41 (UTC)
Distance from East Foothills, CA - 10 km (6 miles) ESE (112 degrees)
Alum Rock, CA - 11 km (7 miles) ESE (102 degrees)
Seven Trees, CA - 13 km (8 miles) ENE (60 degrees)
San Jose, CA - 16 km (10 miles) E (87 degrees)
Buena Vista, CA - 19 km (12 miles) E (81 degrees)
Coordinates 37 deg. 20.8 min. N (37.346N), 121 deg. 42.5 min. W (121.708W)
Depth 7.54 km (4.70 miles)
Quality Fair
Location Quality Parameters Nst=45, Nph=49, Dmin=8.8 km, Rmss=0.73 sec, Erho=0.8 km, Erzz=1.554 km, Gp=28 degrees
Event ID# nc75250956
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For more information, see https://earthquake.usgs.gov

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