2023-10-20 21:21:20 (M4.7) Tonga region -18.7 -173.0 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.7 Earthquake - Tonga region

Preliminary Report

Magnitude	4.7
Date-Time	Universal Time (UTC): 20 Oct 2023 21:21:20 Time near the Epicenter (1): 21 Oct 2023 10:21:20 Time in your area (1): 20 Oct 2023 13:21:20
Location	18.660S 172.972W
Depth	10 km
Distances	106.8 km (66.2 mi) E of Neiafu, Tonga 360.1 km (223.3 mi) NE of Nuku‘alofa, Tonga 542.0 km (336.0 mi) SSW of Pago Pago, American Samoa 549.4 km (340.6 mi) SSW of Apia, Samoa 850.1 km (527.0 mi) ESE of Labasa, Fiji
Location Uncertainty	Horizontal: 10.8 km; Vertical 1.9 km
Parameters	Nph = 21; Dmin = 323.9 km; Rmss = 0.50 seconds; Gp = 137° Version =
Event ID	us 6000lh14

(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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