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Petrópolis on Alert as Southeast Brazil Braces for Multi-Day Downpours

Forecasters tie the threat to a frontal system interacting with the South Atlantic Convergence Zone.

Overview

  • Petrópolis remains in an attention stage with up to 110 mm of rain forecast for Tuesday, as civil defense issues SMS warnings, activates sirens, and opens 14 support points.
  • Brazil’s national disaster monitoring center issued an extreme-danger alert citing risks of intense rain, lightning, hail, and flooding across the region.
  • Inmet advisories project daily totals above 50 mm and gusts up to 60 km/h in parts of Rio de Janeiro, São Paulo, and Espírito Santo, with meteorologists signaling three to four days of intensified rainfall.
  • Rio’s municipal forecast calls for overnight thunderstorms, moderate rain from morning, strong winds, and a marked temperature drop to 22–25 °C.
  • Coastal and travel hazards include a ressaca with waves up to 2.5 meters from Santa Catarina to Rio de Janeiro, with water pooling already reported on the BR-040.