Overview

• In a Sunday alert for Rio Grande do Sul, INMET forecast 30–60 mm of rain per hour or up to 100 mm per day, wind gusts of 60–100 km/h, and hail.
• On Saturday, time‑bound warnings covered Santa Catarina and Paraná until 23:00 BRT with civil defense classifying the risk as moderate to high.
• Authorities cautioned about power outages, crop losses, fallen trees, urban and rural flooding, and landslides in mountainous or low‑lying areas.
• Simepar said northern Paraná could reach about 40°C over the weekend, with isolated storms more likely in central and southern parts of the state.
• Forecasters expect a front linked to an extratropical cyclone to sweep the South between Sunday and Monday, increasing the potential for severe cells.