2025-10-23 21:09:27 (M5.1) off the east coast of Honshu, Japan 37.4 142.0 (70fa9)

M5.1 Earthquake - off the east coast of Honshu, Japan

Preliminary Report

Magnitude	5.1
Date-Time	Universal Time (UTC): 23 Oct 2025 21:09:28 Time near the Epicenter (1): 24 Oct 2025 06:09:28 Time in your area (1): 24 Oct 2025 02:39:28
Location	37.420N 142.036E
Depth	40 km
Distances	90.8 km (56.3 mi) E of Tomioka, Japan 91.9 km (57.0 mi) E of Namie, Japan 96.3 km (59.7 mi) ESE of Minami-Sōma, Japan 106.1 km (65.8 mi) ESE of Sōma, Japan 139.4 km (86.4 mi) SE of Sendai, Japan
Location Uncertainty	Horizontal: 7.6 km; Vertical 5.4 km
Parameters	Nph = 75; Dmin = 354.7 km; Rmss = 1.10 seconds; Gp = 60° Version =
Event ID	us 6000rj0d

(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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