2025-09-12 03:31:04 (M5.3) South Sandwich Islands region -56.3 -27.8 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M5.3 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	5.3
Date-Time	Universal Time (UTC): 12 Sep 2025 03:31:04 Time near the Epicenter (1): 12 Sep 2025 01:31:04 Time in your area (1): 11 Sep 2025 19:31:04
Location	56.319S 27.810W
Depth	10 km
Distances	2433.6 km (1508.8 mi) SW of Edinburgh of the Seven Seas, Saint Helena 2524.0 km (1564.9 mi) ENE of Ushuaia, Argentina 2529.2 km (1568.1 mi) E of Río Grande, Argentina 2723.6 km (1688.6 mi) E of Río Gallegos, Argentina 2739.9 km (1698.7 mi) E of Puerto Deseado, Argentina
Location Uncertainty	Horizontal: 5.6 km; Vertical 1.9 km
Parameters	Nph = 33; Dmin = 596.0 km; Rmss = 0.75 seconds; Gp = 87° Version =
Event ID	us 7000qvly

(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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