A powerful 7.5-magnitude earthquake struck the South Atlantic Ocean near the Chilean Antarctic region and the Drake Passage — one of the world’s most dangerous seas. The quake hit over 700 km southeast of Ushuaia, Argentina, shaking fears of a tsunami threat across the Americas. Chile’s Navy issued a precautionary tsunami alert for its Antarctic territories.

A magnitude 8.3 earthquake hit off the coast of Chile shaking buildings in the capital city of Santiago and generating a tsunami warning for Chile, Peru and French Polynesia.