Inmet Issues 'Great Danger' Warning as Deep Extratropical Cyclone Targets Southern Brazil

Overview

• Brazil’s national weather service activated a red-level 'Grande Perigo' alert from 12:00 Monday to 23:59 Tuesday for much of the South, warning of rainfall above 100 mm/day, gusts over 100 km/h and hail.
• Severe storms already hit São Paulo, where the city entered attention for flooding with hail, intransitable roads and power cuts affecting 114,933 customers in the capital and 176,984 across Enel’s concession area.
• São Paulo’s Civil Defense will activate a crisis cabinet at 8:00 Tuesday to coordinate utilities, firefighters and transport agencies for rapid response during the most critical period.
• Forecasts indicate widespread gusts of 80–100 km/h with local peaks of 100–120 km/h in Rio Grande do Sul and Santa Catarina, while Paraná expects heavy rain and winds near 80 km/h before conditions ease after the system moves to sea.
• Impacts extend beyond the South into parts of the Southeast and Centre-West, with Mato Grosso do Sul and Mato Grosso under storm alerts, and authorities urging standard safety measures and use of emergency numbers 199 and 193.