Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #905593: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 5:52:30 AM (PDT) on Tuesday, October 7, 2025.
The magnitude 2.1 event occurred 27 km (17 miles) WNW of Quincy, CA.
The hypocentral depth is 1 km ( 1 mile).


Magnitude 2.1 - local magnitude (Ml)
Time Tuesday, October 7, 2025 at 5:52:30 AM (PDT)
Tuesday, October 7, 2025 at 12:52:30 (UTC)
Distance from Quincy, CA - 27 km (17 miles) WNW (286 degrees)
Greenville, CA - 30 km (18 miles) WSW (239 degrees)
East Quincy, CA - 31 km (19 miles) WNW (284 degrees)
Chester, CA - 34 km (21 miles) S (182 degrees)
Magalia, CA - 35 km (22 miles) NE (53 degrees)
Coordinates 40 deg. 0.1 min. N (40.001N), 121 deg. 14.9 min. W (121.248W)
Depth 0.94 km (0.60 miles)
Quality Fair
Location Quality Parameters Nst=10, Nph=19, Dmin=30.0 km, Rmss=0.22 sec, Erho=0.65 km, Erzz=14.79 km, Gp=139.77999999999997 degrees
Event ID# nc75246066
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For more information, see https://earthquake.usgs.gov

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