A polar air mass originating from Antarctica brought record low temperatures to Argentina, Chile and Uruguay between June 30 and July 3, 2024, causing at least 15 deaths and prompting emergency shelter activation and gas supply restrictions across the region.
Chile recorded some of its coldest temperatures in history on June 30, as a polar wave brought subzero conditions from the Altiplano to Patagonia. The extreme cold led to closure of a key border crossing between Chile and Argentina starting on July 1 due to ice and snow accumulations.
Torrential rains struck northern Buenos Aires Province, Argentina, between May 16 and 18, 2025, forcing over 4 100 people to evacuate and leaving several others missing. The storms brought more than 400 mm (16 inches) of rainfall, flooding towns, closing major highways, and disrupting the regional soybean harvest.
A very strong earthquake registered by the USGS as M7.4 hit Drake Passage, near the coast of southern Argentina, at 12:58 UTC on May 2, 2025. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth.
Argentina has declared three days of mourning after extreme rainfall and severe flooding resulted in the deaths of 16 people and 2 children missing in the coastal city of Bahía Blanca, Buenos Aires Province, on March 7, 2025.
Record-breaking rainfall hit Bahía Blanca, Buenos Aires Province, on March 7, 2025, causing severe floods in which at least 10 people lost their lives.
A severe storm brought over 270 mm (10.6 inches) of rain in just 4 hours over Bahía Blanca, Buenos Aires Province, on March 7, 2025, triggering widespread flooding and evacuations.
A very bright fireball exploded over the skies of the Rio de La Plata area at around 01:15 UTC on February 2, 2025, creating a spectacular display for people of both Uruguay and Argentina.
A strong earthquake registered by the USGS as M6.4 hit the Chile-Argentina border region at 23:38 UTC (20:38 LT) on December 13, 2024. The agency is reporting a depth of 110 km (68 miles). EMSC is reporting the same magnitude and depth. CSN Chile is reporting M6.3 at a depth of 114 km (70 miles).
Severe thunderstorms hit parts of Argentina, Uruguay and southern Brazil’s Rio Grande do Sul on Sunday, December 1, 2024, bringing strong winds, heavy rain and large hail. The worst affected was Rio Grande do Sul where about 3 million people were left without power.
