2025-08-23 00:10:54 (M5.5) south of Tonga -24.7 -175.9 (70fa9)

M5.5 Earthquake - south of Tonga

Preliminary Report

Magnitude	5.5
Date-Time	Universal Time (UTC): 23 Aug 2025 00:10:55 Time near the Epicenter (1): 23 Aug 2025 13:10:55 Time in your area (1): 23 Aug 2025 05:40:55
Location	24.664S 175.899W
Depth	10 km
Distances	380.4 km (235.9 mi) SSW of 'Ohonua, Tonga 397.1 km (246.2 mi) S of Nuku'alofa, Tonga 931.7 km (577.7 mi) SE of Suva, Fiji 931.8 km (577.7 mi) SE of Nasinu, Fiji 994.0 km (616.3 mi) SE of Sigatoka, Fiji
Location Uncertainty	Horizontal: 12.6 km; Vertical 1.9 km
Parameters	Nph = 61; Dmin = 547.3 km; Rmss = 0.84 seconds; Gp = 127° Version =
Event ID	us 6000r385

(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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