Cold Front Sweeps Into Southeast Brazil, Triggering Rain, Strong Winds and Temperature Drop

Overview

• INMET keeps a yellow alert in force for São Paulo state, citing potential for heavy rain and gusts up to 60 km/h as temperatures trend lower through the week.
• Santa Catarina’s Civil Defense issued an orange alert for 39 western municipalities, forecasting 30–60 mm/h rain or up to 100 mm/day and 60–100 km/h winds with risk of outages, fallen branches and flooding.
• São Paulo city forecasts from the CGE point to showers and drizzle with a marked cooldown, with minima near 15–17°C later this week and post-frontal chill expected to deepen on Thursday.
• Regional outlooks show uneven impacts: the Triângulo Mineiro expects 10–50 mm of rain, locally above 60 mm, while the Campinas region anticipates recurring showers and a maximum near 19°C on Thursday, per Cepagri.
• Climatologists note the air mass is atypical for late October, and guidance indicates instability across the Southeast through midweek even as parts of the North and Northeast, such as Piauí, remain very hot for now.