2025-08-11 06:37:41 (M5.1) Tonga -16.8 -173.9 (70fa9)

M5.1 Earthquake - Tonga

Preliminary Report

Magnitude	5.1
Date-Time	Universal Time (UTC): 11 Aug 2025 06:37:42 Time near the Epicenter (1): 11 Aug 2025 19:37:42 Time in your area (1): 11 Aug 2025 12:07:42
Location	16.786S 173.892W
Depth	139 km
Distances	92.6 km (57.4 mi) S of Hihifo, Tonga 398.5 km (247.1 mi) SW of Apia, Samoa 440.5 km (273.1 mi) SW of Pago Pago, American Samoa 500.9 km (310.6 mi) NNE of Nuku'alofa, Tonga 720.6 km (446.8 mi) E of Labasa, Fiji
Location Uncertainty	Horizontal: 9.2 km; Vertical 6.7 km
Parameters	Nph = 74; Dmin = 453.9 km; Rmss = 1.27 seconds; Gp = 32° Version =
Event ID	us 6000qzrg

(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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