From: mailto: == PRELIMINARY REPORT ==

Event type: Earthquake Region: South Sandwich Islands region Geographic coordinates: 56 377S, 26 557W Magnitude: 5 5 Depth: 54 km Universal Time (UTC): 11 Oct 2025 13:08:00 Time near the Epicenter (1): 11 Oct 2025 11:08:00 Time in your area (1): 11 Oct 2025 23:08:00

Location with respect to nearby cities: 2396 0 km (1485 5 mi) SSW of Edinburgh of the Seven Seas, Saint Helena 2597 8 km (1610 6 mi) ENE of Ushuaia, Argentina 2604 1 km (1614 5 mi) E of Río Grande, Argentina 2799 7 km (1735 8 mi) E of Río Gallegos, Argentina 2817 6 km (1746 9 mi) E of Puerto Deseado, Argentina

ADDITIONAL PARAMETERS

event ID : us 6000rgk9

This event has been reviewed by a seismologist

(1) Nominal Standard Time; local and daylight savings time zone may differ For subsequent updates, maps, and technical information, see: https://earthquake usgs gov/earthquakes/eventpage/us6000rgk9?utm_medium=email&utm_source=ENS&utm_campaign=realtime or https://earthquake usgs gov/

National Earthquake Information Center U S Geological Survey

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