2025-12-16 13:44:14 (M5.1) southern Mid-Atlantic Ridge -43.7 -16.3 (90be5)

M5.1 Earthquake - southern Mid-Atlantic Ridge

Preliminary Report

Magnitude	5.1
Date-Time	Universal Time (UTC): 16 Dec 2025 13:44:15 Time near the Epicenter (1): 16 Dec 2025 12:44:15 Time in your area (1): 16 Dec 2025 05:44:15
Location	43.724S 16.270W
Depth	10 km
Distances	811.7 km (503.3 mi) SSW of Edinburgh of the Seven Seas, Saint Helena 3172.4 km (1966.9 mi) W of Retreat, South Africa 3175.4 km (1968.8 mi) W of Cape Town, South Africa 3175.7 km (1969.0 mi) W of Claremont, South Africa 3177.6 km (1970.1 mi) W of Rondebosch, South Africa
Location Uncertainty	Horizontal: 10.9 km; Vertical 1.9 km
Parameters	Nph = 46; Dmin = 1878.6 km; Rmss = 0.57 seconds; Gp = 87° Version =
Event ID	us 6000rv9p

(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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