Overview
- In Rio Grande do Sul, a red alert from Sunday into early Monday warns of more than 100 mm of rain in 24 hours, wind gusts above 100 km/h and possible hail.
- Santa Catarina’s civil defense expects storms from Sunday afternoon into Monday as a cold front tied to a cyclone over the Atlantic approaches, with risk of roof damage, power disruptions, falling trees and localized flooding.
- National officials say the South and parts of Mato Grosso do Sul face the highest risk between Nov. 16–17, while the Southeast sees mainly heat‑driven showers on Sunday before the front brings stronger rain afterward.
- Forecasts indicate the system spreads through Santa Catarina and Paraná on Sunday and brings rain to capitals including São Paulo, Rio de Janeiro, Belo Horizonte and Campo Grande, with storms also flagged in Acre, Rondônia, Amazonas and Roraima.
- Goiás remains relatively calm through the weekend but is expected to enter alert on Monday as the front arrives, and authorities urge standard precautions and use of Defesa Civil channels at 199 and Corpo de Bombeiros at 193 for emergencies.