2026-08-23 11:22:41 (M5.3) southern Mid-Atlantic Ridge -12.8 -14.9 (70fa9)

M5.3 Earthquake - southern Mid-Atlantic Ridge

Preliminary Report

Magnitude	5.3
Date-Time	Universal Time (UTC): 23 Aug 2026 11:22:42 Time near the Epicenter (1): 23 Aug 2026 10:22:42 Time in your area (1): 23 Aug 2026 16:52:42
Location	12.830S 14.852W
Depth	10 km
Distances	544.3 km (337.5 mi) S of Georgetown, Saint Helena 2060.4 km (1277.5 mi) SSW of Harper, Liberia 2075.2 km (1286.6 mi) SSW of Greenville, Liberia 2080.5 km (1289.9 mi) SSW of Tabou, Ivory Coast 2135.9 km (1324.2 mi) SSW of Buchanan, Liberia
Location Uncertainty	Horizontal: 10.8 km; Vertical 1.9 km
Parameters	Nph = 78; Dmin = 543.8 km; Rmss = 0.78 seconds; Gp = 56° Version =
Event ID	us 6000tmyk

(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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