2025-08-20 20:35:03 (M4.4) Tonga -18.2 -175.1 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.4 Earthquake - Tonga

Preliminary Report

Magnitude	4.4
Date-Time	Universal Time (UTC): 20 Aug 2025 20:35:03 Time near the Epicenter (1): 21 Aug 2025 09:35:03 Time in your area (1): 20 Aug 2025 12:35:03
Location	18.222S 175.113W
Depth	248 km
Distances	128.4 km (79.6 mi) WNW of Neiafu, Tonga 322.8 km (200.1 mi) N of Nuku‘alofa, Tonga 603.3 km (374.1 mi) SW of Apia, Samoa 619.5 km (384.1 mi) ESE of Labasa, Fiji 642.3 km (398.3 mi) SW of Pago Pago, American Samoa
Location Uncertainty	Horizontal: 10.4 km; Vertical 9.0 km
Parameters	Nph = 37; Dmin = 554.8 km; Rmss = 1.06 seconds; Gp = 93° Version =
Event ID	us 6000r2l2

(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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