Overview

• Argentina’s meteorological service placed about 11 provinces under yellow and orange alerts for Oct. 4–5, with orange zones in parts of Córdoba, Santa Fe and Buenos Aires expecting 40–80 mm of rain and gusts that could top 90 km/h.
• Zonda and strong wind advisories cover western and Andean provinces including Mendoza, San Juan, La Rioja, Catamarca and Neuquén, where downslope gusts may approach 100 km/h with low humidity and visibility reduction.
• Buenos Aires and the AMBA shift from near‑summer heat Saturday to widespread storms on Sunday, with frequent lightning, possible hail and a marked temperature drop into Monday.
• Mexico’s weather agency is tracking a low‑pressure area near Jalisco, Colima and Michoacán with high cyclogenesis potential, bringing intense rains, strong winds and elevated seas, while Cold Front No. 5 drives 60 km/h gusts in the northwest and near‑freezing dawns in some highlands.
• Peru’s Senamhi warns of stronger south winds along the coast from Tumbes to Arequipa through Oct. 6, with dust‑laden fog and drizzles reducing visibility in areas such as Ica and Piura, and authorities urging cautious driving and preparedness.