2026-10-07 04:39:26 (M4.9) South Sandwich Islands region -55.7 -30.0 (90be5)

M4.9 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	4.9
Date-Time	Universal Time (UTC): 7 Oct 2026 04:39:26 Time near the Epicenter (1): 7 Oct 2026 02:39:26 Time in your area (1): 6 Oct 2026 20:39:26
Location	55.674S 30.029W
Depth	10 km
Distances	2348.0 km (1455.7 mi) ENE of Tolhuin, Argentina 2406.2 km (1491.8 mi) ENE of Ushuaia, Argentina 2406.4 km (1491.9 mi) E of Río Grande, Argentina 2594.2 km (1608.4 mi) E of Río Gallegos, Argentina 2596.3 km (1609.7 mi) E of Puerto Deseado, Argentina
Location Uncertainty	Horizontal: 8.4 km; Vertical 1.9 km
Parameters	Nph = 28; Dmin = 441.8 km; Rmss = 0.91 seconds; Gp = 99° Version =
Event ID	us 6000u0pb

(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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