Overview

• Polar air trailing a weekend cold front has triggered an early‑spring chill in the South and Southeast, with Rio Grande do Sul lows reaching 3.9°C in Hulha Negra.
• São Paulo’s civil defense issued an intense cold alert, and the state opened an emergency shelter at Metrô Pedro II to accommodate people experiencing homelessness through Wednesday morning.
• Inmet issued heavy‑rain warnings across the Centre‑North and North, while Salvador and other Bahia cities logged notable 24‑hour totals as Codesal warned of flooding and landslide risk.
• The Navy’s ressaca advisory for Rio de Janeiro forecasts waves up to 3 meters, prompting closure of the Niemeyer and Tim Maia coastal bikeways, with local forecasts pointing to improvement from Wednesday.
• Brasília remained under a yellow alert for intense rain, and the airport reported 17 departures canceled, 2 arrivals canceled, 14 diversions and numerous delays due to weather.