As per reports, as of Saturday (15 November), the Civil Defense of São Paulo has issued a state-wide alert regarding an advancing cold front expected between Sunday (16 November) and Tuesday (18 November).
• The cold front is expected to lead to heavy rainfall, lightning, wind gusts exceeding 70 kilometres per hour, and isolated hail across several regions. The alert is valid from Sunday (16 November) through Tuesday (18 November).
• By Sunday (16 November), although the cold front may remain more intense over the South of Brazil, its effects is expected to already extend to the Southeast, with the possibility of scattered rainfall.
• According to Civil Defense, by Monday (17 November), as the system shifts further toward the Southeast, all regions of São Paulo may be subject to intense rainfall, accompanied by lightning and strong winds.
• On Tuesday (18 November), unstable conditions may persist, with rainfall, thunderstorms, and shifting cloud cover expected across most parts of São Paulo state.
• The regions forecast to record the highest rainfall totals include Vale do Paraíba, the North Coast, Serra da Mantiqueira, Vale do Ribeira, Sorocaba, Campinas, Itapeva, Baixada Santista, the Metropolitan Region of São Paulo, Bauru, Araraquara, Presidente Prudente, Marília, Araçatuba, São José do Rio Preto, Barretos, Franca and Ribeirão Preto.
• Nationally, the latest red alert from Inmet remains in effect for Rio Grande do Sul, Paraná, Santa Catarina, and southern Mato Grosso do Sul from Sunday (16 November) to Monday (17 November). Red-alert regions may receive rainfall exceeding 60 millimetres per hour or 100 millimetres per hour, winds above 100 kiloemtres per hour, and hailstorms.
• The south-central region, including São Paulo, Rio de Janeiro, southern Minas Gerais, Goiás, and Mato Grosso, is under orange storm warning, with rainfall forecasts of 30–60 millimetres per hour and winds between 60–100 kilometres per hour.
• Additional localised severe phenomena, such as downbursts, may also occur, with the potential to cause tornado-level structural impacts.
