2025-09-20 07:28:15 (M5.1) South Sandwich Islands region -57.9 -25.1 (70fa9)

M5.1 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	5.1
Date-Time	Universal Time (UTC): 20 Sep 2025 07:28:16 Time near the Epicenter (1): 20 Sep 2025 05:28:16 Time in your area (1): 20 Sep 2025 12:58:16
Location	57.944S 25.147W
Depth	29 km
Distances	2504.5 km (1552.8 mi) SSW of Edinburgh of the Seven Seas, Saint Helena 2643.4 km (1638.9 mi) E of Ushuaia, Argentina 2658.5 km (1648.3 mi) E of Río Grande, Argentina 2865.8 km (1776.8 mi) E of Río Gallegos, Argentina 2879.1 km (1785.0 mi) E of Punta Arenas, Chile
Location Uncertainty	Horizontal: 12.1 km; Vertical 4.5 km
Parameters	Nph = 52; Dmin = 1840.4 km; Rmss = 0.70 seconds; Gp = 83° Version =
Event ID	us 7000qxiw

(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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