2021-10-28 22:37:47 (M4.7) Samoa Islands region -16.0 -172.1 (90be5)

M4.7 Earthquake - Samoa Islands region

Preliminary Report

Magnitude	4.7
Date-Time	28 Oct 2021 22:37:47 UTC 28 Oct 2021 11:37:47 near epicenter 28 Oct 2021 14:37:47 standard time in your timezone
Location	15.998S 172.055W
Depth	10 km
Distances	186.4 km (115.6 mi) E of Hihifo, Tonga 233.2 km (144.6 mi) SW of T?funa, American Samoa 239.5 km (148.5 mi) SW of Pago Pago, American Samoa 241.5 km (149.7 mi) S of Apia, Samoa 658.9 km (408.5 mi) NNE of Nuku�alofa, Tonga
Location Uncertainty	Horizontal: 9.9 km; Vertical 1.9 km
Parameters	Nph = 24; Dmin = 232.7 km; Rmss = 0.48 seconds; Gp = 82° Version =
Event ID	us 7000fpjk

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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