Overview
- Argentina’s national weather service issued yellow alerts for extreme heat and thunderstorms covering at least 19 provinces for Monday, December 29.
- The agency also ratified a separate yellow storm alert for 13 provinces, including Córdoba, Misiones, Corrientes, Chaco, Formosa, Salta, Jujuy, Tucumán, Catamarca, La Rioja, San Juan, San Luis and Mendoza.
- Forecasts warn of short‑period heavy rain, frequent electrical activity, occasional hail and wind gusts near 70–80 km/h, with rainfall of 20–70 mm in some regions.
- Localized guidance highlights Jujuy expecting 20–50 mm with possible hail and Tierra del Fuego under a persistent rain alert totaling 10–20 mm.
- In North America, a winter storm recently eased after causing roughly 1,500 U.S. flight cancellations and emergency measures in New York and New Jersey, while California contends with flooding, landslides and at least three reported deaths.