A strong and shallow earthquake registered by the USGS as M6.5 hit the South Sandwich Islands at 16:14 UTC on April 5. The agency is reporting a depth of 58.4 km (36.3 miles).
The epicenter was located 44km (28 miles) N of Zavodovski Island, 94km (60 miles) NNW of Visokoi Island.
There are no people living within close proximity of the quake.
And no tsunami warnings were issued.
Seismic and Volcanic activity has been correlated to changes in our sun.
The recent global uptick in earthquakes and volcanic eruptions is likely attributed to the drop-off in solar activity, coronal holes, a waning magnetosphere, and the increase in Galactic Cosmic Rays penetrating silica-rich magma.
Check out these link for more info:
Grand Solar Minimum + Pole Shift