2025-09-01 05:54:39 (M4.4) Tonga -17.4 -174.7 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.4 Earthquake - Tonga

Preliminary Report

Magnitude	4.4
Date-Time	Universal Time (UTC): 1 Sep 2025 05:54:40 Time near the Epicenter (1): 1 Sep 2025 18:54:40 Time in your area (1): 31 Aug 2025 21:54:40
Location	17.384S 174.710W
Depth	210 km
Distances	160.0 km (99.2 mi) NNW of Neiafu, Tonga 418.6 km (259.6 mi) N of Nuku‘alofa, Tonga 503.9 km (312.4 mi) SW of Apia, Samoa 549.8 km (340.9 mi) SW of Pago Pago, American Samoa 640.0 km (396.8 mi) E of Labasa, Fiji
Location Uncertainty	Horizontal: 9.8 km; Vertical 8.1 km
Parameters	Nph = 33; Dmin = 496.0 km; Rmss = 0.79 seconds; Gp = 73° Version =
Event ID	us 7000qsyj

(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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