2025-12-16 13:53:26 (M3.1) Northern California 37.8 -121.9 (90be5)

M3.1 Earthquake - Northern California

Preliminary Report

Magnitude	3.1
Date-Time	Universal Time (UTC): 16 Dec 2025 13:53:27 Time near the Epicenter (1): 16 Dec 2025 05:53:27 Time in your area (1): 16 Dec 2025 05:53:27
Location	37.752N 121.941W
Depth	8 km
Distances	4.5 km (2.8 mi) SE of San Ramon, California 5.5 km (3.4 mi) N of Dublin, California 9.3 km (5.8 mi) SE of Danville, California 11.5 km (7.1 mi) NNW of Pleasanton, California 100.1 km (62.1 mi) SSW of Sacramento, California
Location Uncertainty	Horizontal: 0.1 km; Vertical 0.4 km
Parameters	Nph = 76; Dmin = 11.0 km; Rmss = 0.13 seconds; Gp = 24° Version = 2
Event ID	nc 75280786

(1) Nominal Standard Time; local and daylight savings time zone may differ.
For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
CISN Northern California Management Center
U.S. Geological Survey
Berkeley Seismological Laboratory
http://www.cisn.org/ncmc.html

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