A major, preliminary magnitude 7.5 earthquake struck in the South Atlantic Ocean late Thursday, the United States Geological Survey reported. The U.S. National Oceanic and Atmospheric Administration said there was no longer a threat of a tsunami after an earlier advisory by Chilean authorities for parts of Antarctica.

The National Seismic Monitoring Network stations, operated by the National Centre of Meteorology (NCM), recorded a 3.3-magnitude earthquake in Safad area

A 7.5 magnitude earthquake rattled the Chilean Antarctic region and the southern Drake Passage on Thursday, the US Geological Survey said.