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 powerful 7.5 magnitude earthquake struck the Drake Passage, the remote stretch of ocean between South America and Antarctica, shaking the Earth beneath the icy waters. Initially reported as an 8.0 quake,

The epicenter of the 7.5-magnitude quake was in the Drake Passage, a body of water between the southernmost tip of South America and Antarctica.