2025-07-20 18:41:16 (M4.9) South Sandwich Islands region -56.7 -26.9 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.9 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	4.9
Date-Time	Universal Time (UTC): 20 Jul 2025 18:41:17 Time near the Epicenter (1): 20 Jul 2025 16:41:17 Time in your area (1): 20 Jul 2025 10:41:17
Location	56.693S 26.950W
Depth	127 km
Distances	2438.6 km (1511.9 mi) SSW of Edinburgh of the Seven Seas, Saint Helena 2566.2 km (1591.0 mi) ENE of Ushuaia, Argentina 2573.8 km (1595.8 mi) E of Río Grande, Argentina 2771.5 km (1718.4 mi) E of Río Gallegos, Argentina 2795.7 km (1733.3 mi) E of Puerto Deseado, Argentina
Location Uncertainty	Horizontal: 11.2 km; Vertical 7.3 km
Parameters	Nph = 57; Dmin = 660.0 km; Rmss = 0.81 seconds; Gp = 68° Version =
Event ID	us 7000qe3e

(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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