Brazil Under Multi‑Day Severe Weather Alerts as Frontal System Triggers Dangerous Storms

Overview

• São Paulo state civil defense warns of heavy rain, lightning, strong wind gusts and possible hail from Sunday through Tuesday, with very high rain totals expected in the Vale do Paraíba, Litoral Norte, Serra da Mantiqueira, Greater São Paulo and the Baixada Santista.
• Santa Catarina authorities report moderate to high risk for thunderstorms bringing hail, power and roof damage and localized flooding this weekend, with instability spreading and new storms expected on Sunday.
• The national meteorology institute (INMET) issued alerts for Saturday into Sunday warning of 30–60 mm per hour of rain and 60–100 km/h gusts, including a potential‑danger notice covering 57 municipalities in Mato Grosso.
• Bahia logged more than 90,000 lightning strikes in 48 hours with widespread storm impacts, leaving 344 of 417 cities under orange or red alerts and at least three municipalities in a state of emergency.
• Piauí recorded a second hailstorm in three days in Arraial without reported injuries, as civil defense agencies reiterate guidance to avoid flooded areas, seek secure shelter and stay clear of trees and metal structures.