Overview

• INMET issued red and orange warnings for parts of the South with forecast rainfall above 60 mm per hour or over 100 mm in a day, posing risks of flooding and landslides.
• Southern states reported significant impacts on Sunday, including 95 mm of rain in Santa Maria (RS), wind gusts up to 98 km/h, and 10 homes unroofed by hail and wind in Tramandaí.
• São Paulo’s Defesa Civil mobilized a crisis cabinet and warned of severe thunderstorms, intense winds, frequent lightning and isolated hail from Sunday night into Monday across multiple regions.
• Forecasts indicate widespread rain and storms in São Paulo on Monday followed by weakening showers and a marked cooldown on Tuesday, with minimums near 12–13 °C in inland cities such as Itapeva and Presidente Prudente.
• Authorities advised staying away from trees and flooded areas, unplugging electronics and calling Defesa Civil (199) or Corpo de Bombeiros (193) during emergencies, with the Navy also warning of strong coastal winds on the Litoral Norte.