Magnitude 7.4 Earthquake South of Ushuaia, Argentina. Tsunami Alert Issued
The event occurred in the Drake Passage, a region known for its tectonic activity due to the boundary between the South American Plate and the Scotia Plate.
SOUTH AMERICA — A magnitude 7.4 earthquake struck 136 miles (219 km) south of Ushuaia, Argentina, on May 2, 2025, at 20:58:26 UTC, at a depth of 6.2 miles (10.0 km), according to United States Geological Survey (USGS) seismic data.
The event occurred in the Drake Passage, a region known for its tectonic activity due to the boundary between the South American Plate and the Scotia Plate.
A tsunami threat has been issued, with potential wave heights of 1–3.3 feet (0.3–1 meters) for Antarctica and 3.3–9.8 feet (1–3 meters) for Chile, as reported at 10:40:35 PM and 10:35 PM on May 2, 2025, respectively.
The shallow depth and high magnitude indicate a significant risk of regional impact, particularly for coastal areas.