2025-09-13 04:32:09 (M5.4) South Sandwich Islands region -55.6 -28.1 (70fa9)

M5.4 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	5.4
Date-Time	Universal Time (UTC): 13 Sep 2025 04:32:09 Time near the Epicenter (1): 13 Sep 2025 02:32:09 Time in your area (1): 13 Sep 2025 10:02:09
Location	55.624S 28.064W
Depth	54 km
Distances	2380.0 km (1475.6 mi) SW of Edinburgh of the Seven Seas, Saint Helena 2527.5 km (1567.0 mi) ENE of Ushuaia, Argentina 2528.8 km (1567.8 mi) ENE of Río Grande, Argentina 2717.7 km (1685.0 mi) E of Río Gallegos, Argentina 2719.5 km (1686.1 mi) E of Puerto Deseado, Argentina
Location Uncertainty	Horizontal: 10.7 km; Vertical 7.1 km
Parameters	Nph = 48; Dmin = 560.2 km; Rmss = 0.80 seconds; Gp = 72° Version =
Event ID	us 7000qvx7

(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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