2023-08-18 07:57:57 (M5.7) central Mid-Atlantic Ridge -0.5 -19.7 (70fa9)

M5.7 Earthquake - central Mid-Atlantic Ridge

Preliminary Report

Magnitude	5.7
Date-Time	Universal Time (UTC): 18 Aug 2023 07:57:58 Time near the Epicenter (1): 18 Aug 2023 06:57:58 Time in your area (1): 18 Aug 2023 13:27:58
Location	0.452S 19.710W
Depth	10 km
Distances	1014.4 km (628.9 mi) NW of Georgetown, Saint Helena 1190.9 km (738.3 mi) SW of Bonthe, Sierra Leone 1213.3 km (752.2 mi) SW of Goderich, Sierra Leone 1219.7 km (756.2 mi) SW of Waterloo, Sierra Leone 1221.9 km (757.6 mi) SW of Freetown, Sierra Leone
Location Uncertainty	Horizontal: 9.5 km; Vertical 1.9 km
Parameters	Nph = 133; Dmin = 1757.1 km; Rmss = 0.51 seconds; Gp = 41° Version =
Event ID	us 7000kp6m

(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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