2025-08-21 18:51:23 (M4.3) Bonin Islands, Japan region 28.0 139.4 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.3 Earthquake - Bonin Islands, Japan region

Preliminary Report

Magnitude	4.3
Date-Time	Universal Time (UTC): 21 Aug 2025 18:51:24 Time near the Epicenter (1): 22 Aug 2025 03:51:24 Time in your area (1): 21 Aug 2025 10:51:24
Location	28.042N 139.405E
Depth	509 km
Distances	694.5 km (430.6 mi) SSE of Kushimoto, Japan 710.7 km (440.6 mi) SSE of Shingū, Japan 721.5 km (447.3 mi) SSE of Kumano, Japan 734.6 km (455.5 mi) SSE of Owase, Japan 775.8 km (481.0 mi) S of Shizuoka, Japan
Location Uncertainty	Horizontal: 5.7 km; Vertical 8.6 km
Parameters	Nph = 74; Dmin = 293.7 km; Rmss = 0.97 seconds; Gp = 63° Version =
Event ID	us 6000r2tq

(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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