Overview

• INMET issued high-risk alerts for Sept. 24–25 with rain of 30–60 mm per hour or 50–100 mm per day, winds of 60–100 km/h and potential hail across parts of the Southeast, Center-West and western Amazon.
• In Greater São Paulo, 37,118 customers remained without power two days after near‑100 km/h gusts, as Enel reported 97% restoration and more than 1,300 field teams mobilized.
• Instability extended beyond SP: Goiás placed 124 municipalities under potential storm risk per Cimehgo, Tocantins faced a storm and hail alert with 40–60 km/h winds, the Federal District stayed under a storm warning after heavy showers, and cities in the Triângulo Mineiro prepared for downpours and urban flooding risk.
• Following the frontal passage, Paraná recorded very low temperatures, including a −1°C reading and localized frost, according to Simepar.
• Authorities coordinated cleanup and oversight, with São Paulo’s governor seeking judicial authorization to deploy semi‑open detainees for emergency work and Procon Paulistano notifying Enel over outage response, while specialists urged better urban tree management and drainage planning.