2026-02-28 21:39:28 (M4.9) southwestern Ryukyu Islands, Japan 25.1 125.0 (90be5)

M4.9 Earthquake - southwestern Ryukyu Islands, Japan

Preliminary Report

Magnitude	4.9
Date-Time	Universal Time (UTC): 28 Feb 2026 21:39:29 Time near the Epicenter (1): 1 Mar 2026 06:39:29 Time in your area (1): 28 Feb 2026 13:39:29
Location	25.148N 125.020E
Depth	10 km
Distances	47.7 km (29.6 mi) NW of Hirara, Japan 49.4 km (30.6 mi) NW of Miyakojima, Japan 124.6 km (77.3 mi) NE of Ishigaki, Japan 287.3 km (178.1 mi) WSW of Itoman, Japan 291.8 km (180.9 mi) WSW of Naha, Japan
Location Uncertainty	Horizontal: 6.1 km; Vertical 1.9 km
Parameters	Nph = 60; Dmin = 116.4 km; Rmss = 0.98 seconds; Gp = 60° Version =
Event ID	us 7000s148

(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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