2026-09-29 04:16:27 (M4.8) South Sandwich Islands region -55.3 -28.2 (90be5)

M4.8 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	4.8
Date-Time	Universal Time (UTC): 29 Sep 2026 04:16:27 Time near the Epicenter (1): 29 Sep 2026 02:16:27 Time in your area (1): 28 Sep 2026 20:16:27
Location	55.316S 28.210W
Depth	35 km
Distances	2358.1 km (1462.0 mi) SW of Edinburgh of the Seven Seas, Saint Helena 2527.1 km (1566.8 mi) ENE of Río Grande, Argentina 2527.5 km (1567.1 mi) ENE of Ushuaia, Argentina 2708.7 km (1679.4 mi) E of Puerto Deseado, Argentina 2713.4 km (1682.3 mi) E of Río Gallegos, Argentina
Location Uncertainty	Horizontal: 11.9 km; Vertical 7.8 km
Parameters	Nph = 27; Dmin = 544.9 km; Rmss = 0.41 seconds; Gp = 105° Version =
Event ID	us 6000tyab

(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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