2025-03-18 22:52:35 UPDATED: (M5.4) South Sandwich Islands region -55.2 -29.1 (90be5)

M5.4 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	5.4
Date-Time	Universal Time (UTC): 18 Mar 2025 22:52:36 Time near the Epicenter (1): 18 Mar 2025 20:52:36 Time in your area (1): 18 Mar 2025 14:52:36
Location	55.185S 29.132W
Depth	35 km
Distances	2383.0 km (1477.5 mi) SW of Edinburgh of the Seven Seas, Saint Helena 2473.0 km (1533.3 mi) ENE of Río Grande, Argentina 2474.9 km (1534.4 mi) ENE of Ushuaia, Argentina 2649.5 km (1642.7 mi) E of Puerto Deseado, Argentina 2657.6 km (1647.7 mi) E of Río Gallegos, Argentina
Location Uncertainty	Horizontal: 15.1 km; Vertical 2.0 km
Parameters	Nph = 44; Dmin = 484.7 km; Rmss = 0.66 seconds; Gp = 186° Version =
Event ID	us 6000pznk ***This event has been revised.

(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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