Overview

• Brazil’s national weather service issued an orange alert on Saturday for 590 São Paulo municipalities, forecasting 30–60 mm/h (50–100 mm/day), 60–100 km/h gusts and possible hail.
• São Paulo’s civil defense warned of storms through Sunday with risks of flooding, landslides and power cuts, flagging the North Coast for the most intense rain and strong coastal winds with hazardous seas.
• In Santa Catarina and across the southern region, renewed alerts called for up to 100 mm of rain in a day, 60–100 km/h winds and hail, with potential for tree falls, crop damage and outages.
• Forecasts showed instability extending from the South into parts of Mato Grosso do Sul, Minas Gerais and Rio de Janeiro on Saturday, with a sharp temperature drop expected into Sunday.
• Local disruptions were reported in São Paulo’s interior, including power loss at a Piracicaba water intake that curtailed water treatment and supply, plus flooding and fallen trees in Limeira.