2026-07-28 19:25:41 (M4.5) Tonga -16.8 -173.6 (90be5)

M4.5 Earthquake - Tonga

Preliminary Report

Magnitude	4.5
Date-Time	Universal Time (UTC): 28 Jul 2026 19:25:42 Time near the Epicenter (1): 29 Jul 2026 08:25:42 Time in your area (1): 28 Jul 2026 11:25:42
Location	16.777S 173.642W
Depth	123 km
Distances	92.6 km (57.4 mi) S of Hihifo, Tonga 383.0 km (237.5 mi) SSW of Apia, Samoa 419.4 km (260.0 mi) SW of Pago Pago, American Samoa 509.7 km (316.0 mi) NNE of Nuku‘alofa, Tonga 747.2 km (463.2 mi) E of Labasa, Fiji
Location Uncertainty	Horizontal: 9.8 km; Vertical 9.1 km
Parameters	Nph = 21; Dmin = 374.6 km; Rmss = 0.69 seconds; Gp = 124° Version =
Event ID	us 6000tgg0

(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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