2025-07-31 00:00:35 (M4.1) Sea of Japan 38.3 134.3 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.1 Earthquake - Sea of Japan

Preliminary Report

Magnitude	4.1
Date-Time	Universal Time (UTC): 31 Jul 2025 00:00:36 Time near the Epicenter (1): 31 Jul 2025 09:00:36 Time in your area (1): 30 Jul 2025 16:00:36
Location	38.276N 134.343E
Depth	420 km
Distances	253.3 km (157.0 mi) WNW of Anamizu, Japan 265.2 km (164.4 mi) NW of Hakui, Japan 268.5 km (166.5 mi) WNW of Nanao, Japan 274.0 km (169.9 mi) NW of Kanazawa, Japan 277.0 km (171.7 mi) NW of Tsubata, Japan
Location Uncertainty	Horizontal: 13.6 km; Vertical 11.3 km
Parameters	Nph = 35; Dmin = 392.1 km; Rmss = 0.67 seconds; Gp = 60° Version =
Event ID	us 6000qws6

(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
National Earthquake Information Center
U.S. Geological Survey


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