2026-03-20 00:22:02 UPDATED: (M6.6) South Shetland Islands -61.2 -56.3 (70fa9)

M6.6 Earthquake - South Shetland Islands

Preliminary Report

Magnitude	6.6
Date-Time	Universal Time (UTC): 20 Mar 2026 00:22:02 Time near the Epicenter (1): 19 Mar 2026 20:22:02 Time in your area (1): 20 Mar 2026 05:52:02
Location	61.153S 56.268W
Depth	4 km
Distances	981.7 km (608.6 mi) SE of Tolhuin, Argentina 1000.5 km (620.3 mi) SE of Ushuaia, Argentina 1066.5 km (661.2 mi) SE of Río Grande, Argentina 1251.1 km (775.7 mi) SE of Punta Arenas, Chile 1323.8 km (820.7 mi) SE of Río Gallegos, Argentina
Location Uncertainty	Horizontal: 8.3 km; Vertical 4.1 km
Parameters	Nph = 59; Dmin = 933.3 km; Rmss = 0.93 seconds; Gp = 76° Version =
Event ID	us 6000shlp

(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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