2025-10-29 06:16:45 (M5.4) southern Mid-Atlantic Ridge -47.1 -12.2 (90be5)

M5.4 Earthquake - southern Mid-Atlantic Ridge

Preliminary Report

Magnitude	5.4
Date-Time	Universal Time (UTC): 29 Oct 2025 06:16:45 Time near the Epicenter (1): 29 Oct 2025 05:16:45 Time in your area (1): 28 Oct 2025 22:16:45
Location	47.111S 12.241W
Depth	10 km
Distances	1115.5 km (691.6 mi) S of Edinburgh of the Seven Seas, Saint Helena 2949.8 km (1828.9 mi) WSW of Retreat, South Africa 2954.2 km (1831.6 mi) WSW of Claremont, South Africa 2955.0 km (1832.1 mi) WSW of Cape Town, South Africa 2956.1 km (1832.8 mi) WSW of Lansdowne, South Africa
Location Uncertainty	Horizontal: 8.4 km; Vertical 1.9 km
Parameters	Nph = 33; Dmin = 1879.0 km; Rmss = 0.75 seconds; Gp = 96° Version =
Event ID	us 6000rk4f

(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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