Inmet Expands Severe-Weather Alerts to 15 States as Cold Front Hits South, Approaches São Paulo

Overview

• Rio Grande do Sul saw the first severe impacts on Sunday, with Porto Alegre recording wind gusts up to 97.8 km/h under a red alert for storm conditions and forecast rain totals near 100 mm/day.
• The São Paulo state civil defense warns of heavy showers, isolated hail and gusts above 70 km/h through Tuesday, highlighting higher rainfall risk in Vale do Paraíba, Litoral Norte, Serra da Mantiqueira, Vale do Ribeira, Baixada Santista and key metropolitan and interior areas.
• Inmet’s alerts detail potential rain rates of 30–60 mm per hour or 50–100 mm per day and winds from 60 to 100 km/h, assigning red, orange and yellow risk levels across large areas of the South and Southeast.
• A new cold front linked to an extratropical cyclone drove the rapid shift, with an orange alert covering all of Paraná, São Paulo and Mato Grosso do Sul into Tuesday morning before the system shifts toward Rio de Janeiro and Espírito Santo by midweek.
• Authorities cite risks of flooding, landslides, roof damage, fallen trees, power outages and coastal agitation and advise residents to follow official guidance and use 199 (Defesa Civil) or 193 (Corpo de Bombeiros) in emergencies.