Overview

• Argentina’s meteorological service projects above‑normal temperatures from October to December across most of the country, with Córdoba carrying a 55% chance of exceeding historical values.
• The SMN expects generally near‑normal rainfall, with a risk of wetter conditions in the northwest and potential deficits in parts of Mesopotamia and western Patagonia.
• Short‑term yellow alerts are in effect in Argentina for storms and strong winds, with threats of heavy rain, frequent lightning and hail, and gusts that may surpass 90 km/h in Chubut and Santa Cruz.
• Mexico’s SMN/Conagua warns that Tropical Wave 35 interacting with low‑pressure systems and the monsoon trough will bring strong to very strong rains from Sept 30 to Oct 2, including in Chiapas and Veracruz, with risks of flooding, river rises, landslides and hail.
• Northwestern Mexico remains hot with highs of 35–40°C in states such as Baja California and Sonora, while authorities are monitoring two Pacific lows with around a 50% chance of tropical development.