The United States Geological Survey reports a major, preliminary magnitude 7.5 earthquake struck in the South Atlantic Ocean, prompting Chilean authorities to issue an advisory for a potential tsunami along parts of Antarctica.

A magnitude 7.5 earthquake occurred in the Drake Passage, sparking a brief tsunami warning for Chile. Initially reported as an 8.0, the quake was confirmed by USGS at a depth of 11 km. It struck southeast of Ushuaia,