2025-08-19 14:37:16 (M5.4) south of Tonga -24.4 -176.0 (70fa9)

M5.4 Earthquake - south of Tonga

Preliminary Report

Magnitude	5.4
Date-Time	Universal Time (UTC): 19 Aug 2025 14:37:16 Time near the Epicenter (1): 20 Aug 2025 03:37:16 Time in your area (1): 19 Aug 2025 20:07:16
Location	24.438S 175.959W
Depth	35 km
Distances	358.0 km (222.0 mi) SSW of 'Ohonua, Tonga 373.8 km (231.8 mi) SSW of Nuku'alofa, Tonga 908.8 km (563.4 mi) SE of Nasinu, Fiji 908.8 km (563.5 mi) SE of Suva, Fiji 972.1 km (602.7 mi) SE of Sigatoka, Fiji
Location Uncertainty	Horizontal: 15.1 km; Vertical 6.5 km
Parameters	Nph = 37; Dmin = 1681.7 km; Rmss = 1.06 seconds; Gp = 130° Version =
Event ID	us 6000r222

(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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