Southern Storms Build as Heat and Critical Dryness Grip Interior Brazil

Overview

• INMET reports the front is reinforcing storms in Rio Grande do Sul and Santa Catarina, with alerts for 50–100 mm of rain per day, gusts up to 100 km/h and the chance of hail, alongside a warning for a marked temperature drop.
• After weekend highs near 39°C, Paraná turns cooler and wetter on Monday as instability spreads across the state, with the southern half forecast to hold near 15°C for maximums later this week, according to Simepar.
• Low humidity and heat alerts remain active across interior and northeastern areas, including a yellow notice covering about 99 Paraíba municipalities through 10 a.m. Monday and an orange alert in the Federal District with readings near 12%.
• Southeastern Brazil stays hot and very dry, with São Paulo under elevated wildfire risk and reservoir storage around 30%, while highs into the upper 30s are forecast for parts of the region.
• Forecasters expect continued heat across the Center-West and portions of the North as the front advances through the South, and authorities urge residents to monitor INMET updates and follow Civil Defense (199) and Fire Department (193) guidance.