2025-07-31 04:28:00 (M3.3) Northern California 37.2 -122.5 (90be5)

M3.3 Earthquake - Northern California

Preliminary Report

Magnitude	3.3
Date-Time	Universal Time (UTC): 31 Jul 2025 04:28:00 Time near the Epicenter (1): 30 Jul 2025 21:28:00 Time in your area (1): 30 Jul 2025 20:28:00
Location	37.168N 122.489W
Depth	13 km
Distances	13.5 km (8.4 mi) SW of Pescadero, California 33.2 km (20.6 mi) S of Half Moon Bay, California 40.3 km (25.0 mi) SW of Stanford, California 41.0 km (25.4 mi) SW of Los Altos, California 179.6 km (111.4 mi) SSW of Sacramento, California
Location Uncertainty	Horizontal: 0.5 km; Vertical 0.4 km
Parameters	Nph = 57; Dmin = 12.7 km; Rmss = 0.11 seconds; Gp = 219° Version = 2
Event ID	nc 75217272

(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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