A powerful 7.5-magnitude earthquake struck off the coast of southern Argentina early this morning, triggering tsunami alerts across parts of southern South America and Antarctica. The U.S. Geological Survey reported the quake’s epicenter about 200 kilometers south of Puerto Williams at a depth of 10 kilometers. At least four aftershocks followed the initial tremor.

Officials warned that tsunami waves up to nine feet could strike Chile’s Magallanes Region, while Antarctica may experience waves reaching three feet. Evacuations began along Chile’s southern coastline as emergency sirens sounded. Videos on social media showed residents leaving low-lying areas in Punta Arenas and nearby towns.

Authorities urged residents to include pets and livestock in their evacuation plans, stressing the importance of preparedness. Temporary shelters were opened at higher elevations, and coastlines were cordoned off to prevent people from returning too soon.

Chilean President Gabriel Boric, a native of the region, called for calm and cooperation. “All state resources are available,” he said, emphasizing that protecting lives is the top priority. His message was broadcast nationwide as emergency teams worked to coordinate evacuation and response operations.

The Magallanes Region, Chile’s southernmost territory, is sparsely populated but extremely vulnerable due to its proximity to the epicenter. Reports of power outages and damaged infrastructure were still being assessed by early responders.

Experts explained that Chile sits on the Pacific Ring of Fire, one of the most seismically active zones on Earth, where major quakes are common due to constant tectonic shifts.

The 1960 Valdivia earthquake, measuring 9.5, remains the strongest ever recorded globally, and Chilean authorities have since developed one of the world’s most advanced quake monitoring systems.

Residents are urged to stay alert, follow official updates, and avoid coastal areas until the tsunami warnings are lifted.