2021-12-17 07:34:57 (M4.6) Tonga -16.3 -174.9 (1cbfb)

[ens@xxxxxxxxxxxx (USGS ENS)]

M4.6 Earthquake - Tonga

Preliminary Report

Magnitude	4.6
Date-Time	17 Dec 2021 07:34:57 UTC 17 Dec 2021 20:34:57 near epicenter 16 Dec 2021 23:34:57 standard time in your timezone
Location	16.343S 174.857W
Depth	285 km
Distances	121.4 km (75.3 mi) WSW of Hihifo, Tonga 433.0 km (268.5 mi) SW of Apia, Samoa 496.7 km (307.9 mi) WSW of T?funa, American Samoa 501.3 km (310.8 mi) WSW of Pago Pago, American Samoa 532.1 km (329.9 mi) N of Nuku�alofa, Tonga
Location Uncertainty	Horizontal: 15.2 km; Vertical 6.4 km
Parameters	Nph = 24; Dmin = 426.0 km; Rmss = 0.45 seconds; Gp = 129° Version =
Event ID	us 6000gd1k

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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