2025-08-16 22:52:10 (M5.5) south of Tonga -24.6 -175.9 (70fa9)

M5.5 Earthquake - south of Tonga

Preliminary Report

Magnitude	5.5
Date-Time	Universal Time (UTC): 16 Aug 2025 22:52:11 Time near the Epicenter (1): 17 Aug 2025 11:52:11 Time in your area (1): 17 Aug 2025 04:22:11
Location	24.586S 175.868W
Depth	35 km
Distances	371.3 km (230.2 mi) SSW of 'Ohonua, Tonga 388.1 km (240.6 mi) S of Nuku'alofa, Tonga 927.2 km (574.8 mi) SE of Nasinu, Fiji 927.2 km (574.8 mi) SE of Suva, Fiji 990.1 km (613.8 mi) SE of Sigatoka, Fiji
Location Uncertainty	Horizontal: 12.1 km; Vertical 1.9 km
Parameters	Nph = 44; Dmin = 985.0 km; Rmss = 1.06 seconds; Gp = 80° Version =
Event ID	us 6000r1n6

(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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