2025-12-28 18:03:50 (M4.6) Tonga -17.0 -174.0 (90be5)

M4.6 Earthquake - Tonga

Preliminary Report

Magnitude	4.6
Date-Time	Universal Time (UTC): 28 Dec 2025 18:03:50 Time near the Epicenter (1): 29 Dec 2025 07:03:50 Time in your area (1): 28 Dec 2025 10:03:50
Location	16.987S 173.983W
Depth	146 km
Distances	116.0 km (71.9 mi) S of Hihifo, Tonga 422.3 km (261.8 mi) SW of Apia, Samoa 462.2 km (286.5 mi) SW of Pago Pago, American Samoa 476.9 km (295.7 mi) NNE of Nuku'alofa, Tonga 712.0 km (441.5 mi) E of Labasa, Fiji
Location Uncertainty	Horizontal: 14.2 km; Vertical 11.3 km
Parameters	Nph = 22; Dmin = 414.1 km; Rmss = 1.14 seconds; Gp = 127° Version =
Event ID	us 7000rl80

(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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