Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 10:49:38 PM (PDT) on Friday, August 15, 2025.
The magnitude 1.2 event occurred 9 km (6 miles) ESE of East Foothills, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Friday, August 15, 2025 at 10:49:38 PM (PDT)
Saturday, August 16, 2025 at 5:49:38 (UTC)
Distance from East Foothills, CA - 9 km (6 miles) ESE (104 degrees)
Alum Rock, CA - 10 km (6 miles) E (93 degrees)
Seven Trees, CA - 14 km (8 miles) NE (52 degrees)
San Jose, CA - 16 km (10 miles) E (81 degrees)
Buena Vista, CA - 18 km (11 miles) ENE (76 degrees)
Coordinates 37 deg. 21.7 min. N (37.361N), 121 deg. 43.1 min. W (121.718W)
Depth 9.02 km (5.60 miles)
Quality Excellent
Location Quality Parameters Nst=25, Nph=27, Dmin=7.0 km, Rmss=0.10 sec, Erho=0.26 km, Erzz=0.68 km, Gp=79 degrees
Event ID# nc75224452
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For more information, see https://earthquake.usgs.gov

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