2025-09-12 17:46:45 UPDATED: (M5.6) Tristan da Cunha region -39.4 -15.6 (90be5)

M5.6 Earthquake - Tristan da Cunha region

Preliminary Report

Magnitude	5.6
Date-Time	Universal Time (UTC): 12 Sep 2025 17:46:46 Time near the Epicenter (1): 12 Sep 2025 16:46:46 Time in your area (1): 12 Sep 2025 09:46:46
Location	39.390S 15.608W
Depth	10 km
Distances	386.9 km (239.9 mi) SW of Edinburgh of the Seven Seas, Saint Helena 3080.4 km (1909.9 mi) W of Saldanha, South Africa 3082.9 km (1911.4 mi) W of Retreat, South Africa 3083.5 km (1911.8 mi) W of Cape Town, South Africa 3084.9 km (1912.6 mi) W of Claremont, South Africa
Location Uncertainty	Horizontal: 9.4 km; Vertical 1.8 km
Parameters	Nph = 148; Dmin = 386.6 km; Rmss = 0.53 seconds; Gp = 55° Version =
Event ID	us 7000qvrf ***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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