Brazil Faces Sharp Regional Weather Contrasts This Week

Overview

• Meteorological agencies report a patchwork of conditions across the country with low humidity and high temperatures in central states, rain in the North and Northeast, and a cooling front in the South.
• Inmet issued a yellow low-humidity alert covering Tocantins and parts of Goiás and Mato Grosso, warning afternoon relative humidity could fall to 20–30 percent and raising heat and fire risk into the afternoon hours.
• A coastal low off the Argentina–Uruguay coast will bring light rain mainly to coastal and northern Rio Grande do Sul with totals expected under about 15 mm and localized gusty winds.
• Simepar and regional forecasters say a new polar air mass will lower temperatures and produce pockets of frost with the highest frost risk and isolated subzero minima forecast for the night of Wednesday, July 8 in parts of Paraná and Rio Grande do Sul.
• Authorities advise hydration and limiting outdoor exertion during very dry afternoons, frost protection for vulnerable crops and infrastructure in southern highlands, and monitoring civil defense updates for localized heavy rain or wind in affected coastal cities.