2025-12-12 10:09:20 (M4.9) south of Tonga -26.7 -175.8 (90be5)

M4.9 Earthquake - south of Tonga

Preliminary Report

Magnitude	4.9
Date-Time	Universal Time (UTC): 12 Dec 2025 10:09:21 Time near the Epicenter (1): 12 Dec 2025 23:09:21 Time in your area (1): 12 Dec 2025 02:09:21
Location	26.744S 175.788W
Depth	10 km
Distances	604.3 km (374.7 mi) S of 'Ohonua, Tonga 623.9 km (386.8 mi) S of Nuku'alofa, Tonga 1123.5 km (696.6 mi) SSE of Suva, Fiji 1125.1 km (697.5 mi) SSE of Nasinu, Fiji 1175.6 km (728.9 mi) SE of Sigatoka, Fiji
Location Uncertainty	Horizontal: 13.0 km; Vertical 1.9 km
Parameters	Nph = 43; Dmin = 1039.5 km; Rmss = 0.52 seconds; Gp = 107° Version =
Event ID	us 6000rued

(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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