Overview

• Inmet issued a yellow alert for strong winds in the Baixada Santista, valid through Monday, while state authorities flagged severe storms for multiple São Paulo regions between Sunday and Monday.
• Defesa Civil-SP forecasts heavy rain, wind gusts, lightning and isolated hail for the metropolitan area, coastal zones and interior hubs such as Campinas, Sorocaba, Itapeva, Bauru, Araçatuba, São José do Rio Preto, Presidente Prudente and Marília.
• Santa Catarina authorities warn of rainfall that may reach about 100 mm in a day and gusts of 60–100 km/h, with risks of hail, flooding, fallen trees, crop damage and power outages.
• The shift follows a hot, very dry weekend with pre-frontal winds, with models indicating storms overnight into Monday and a marked temperature drop early in the week as polar air advances.
• Public guidance includes avoiding nautical activities, staying away from trees and flooded areas, and calling Defesa Civil (199) or the Fire Department (193) in emergencies.