2025-06-30 17:38:12 (M4.4) South Sandwich Islands region -55.3 -27.9 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.4 Earthquake - South Sandwich Islands region

Preliminary Report

Magnitude	4.4
Date-Time	Universal Time (UTC): 30 Jun 2025 17:38:13 Time near the Epicenter (1): 30 Jun 2025 15:38:13 Time in your area (1): 30 Jun 2025 09:38:13
Location	55.304S 27.889W
Depth	10 km
Distances	2344.8 km (1453.8 mi) SW of Edinburgh of the Seven Seas, Saint Helena 2547.3 km (1579.3 mi) ENE of Río Grande, Argentina 2547.5 km (1579.5 mi) ENE of Ushuaia, Argentina 2729.1 km (1692.0 mi) E of Puerto Deseado, Argentina 2733.8 km (1695.0 mi) E of Río Gallegos, Argentina
Location Uncertainty	Horizontal: 9.1 km; Vertical 1.9 km
Parameters	Nph = 15; Dmin = 564.9 km; Rmss = 0.43 seconds; Gp = 93° Version =
Event ID	us 7000q9tz

(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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