Overview

• Argentina’s meteorological service confirmed the seasonal system with orange and yellow alerts across provinces including Mendoza, Córdoba, Santa Fe and Buenos Aires, with the worst conditions expected into Sunday.
• Mendoza reported at least 270 incidents and more than 150 people assisted due to flooded homes, fallen trees and posts, and a roof collapse at a San Martín hypermarket, as authorities ordered preventive closures such as the Cañón del Atuel route and required chains on high‑mountain roads.
• The SMN projected widespread accumulations between 20 and 120 mm with isolated spots potentially above 150 mm, while Mendoza’s active orange alert estimates 50–90 mm through the alert period and continued instability overnight.
• Córdoba logged uneven but locally heavy rainfall, with sectors reaching up to 70–80 mm, vados closed as rivers rose, and officials urging reduced speeds and avoidance of flooded crossings as alerts remain in force into Sunday.
• Regional risk extends to Mexico, where Mexico City activated a Yellow Alert for evening hail and downpours and Sonora monitored intense monsoon storms alongside a Pacific low with a 50% chance of cyclogenesis within 48 hours.