Overview

• Energy providers reported widespread blackouts across the metro area, with a peak of roughly 900,000 customers affected after a transmission substation trip and subsequent weather damage.
• Gusts approached 100 km/h across the capital and interior, and a 138.9 km/h measurement was recorded in the Baixada Santista by the Praticagem de São Paulo.
• Authorities logged extensive damage including at least 139 fallen trees and 55 traffic signals out in the capital, with eight people injured statewide and five hurt when an event tent collapsed in Peruíbe.
• Flights were disrupted as GRU alternated 15 operations and canceled seven, and Congonhas reported cancellations and diversions before normalizing later in the day.
• The state activated its SP Sempre Alerta – Chuvas crisis operation while forecasters project a sharp cooldown this week, with minimums near 12–13 °C in parts of the interior.