[REVISION HISTORY]

Brazil Aug-Sept 2026: Heatwaves, Drought & Severe Storms

Updated 38 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-09 21:58 UTC → 2026-09-11 06:12 UTC · added ~~removed~~

By ~~early~~ September 10, 2026, Brazil’s extreme ~~meteorological contrasts intensified as a powerful polar air mass~~ weather patterns intensified, driven by an extratropical cyclone and ~~series of cold fronts moved across the country.~~ El Niño conditions. In the ~~North, the Civil Defense issued a moderate heat wave alert for Manaus and ten other municipalities~~ South, Paraná experienced two confirmed tornadoes within 24 hours—one in ~~Amazonas, while a polar wave threatened Acre and Amazonas with ‘friagem’~~ Francisco Alves and ~~storms. In the Center-West, low air humidity alerts continued for Mato Grosso~~ another in Espigão Alto do Sul, Goiás, the Federal District, and southeastern Mato Grosso. As of September 5, severe storms and cold fronts caused widespread disruption. In the São Paulo metropolitan area, Enel reported over 31,000 customers without electricity, Iguaçu—causing damage to schools and ~~a structure collapse in Campo Limpo Paulista resulted~~ rural properties. Ten municipalities in ~~24 injuries. Firefighters recorded 28 tree falls~~ Paraná reported incidents affecting approximately 583 people, alongside flooding and ~~two~~ landslides in the Vale do Ivaí region. In ~~Minas Gerais, a storm at~~ São Paulo, the situation remains critical. The capital has recorded 151.5% of its expected September ~~Moto Fest~~ rainfall in ~~Patos de Minas caused~~ the first ten days, prompting the activation of a ~~stage collapse, injuring five people. High winds~~ Crisis Cabinet. Some municipalities, such as Marília and Presidente Prudente, have suspended school activities. Severe storms and lightning have also caused ~~property damage and blocked roads~~ significant power disruptions; in Rio Claro, fallen trees hit electrical lines, while Energisa recorded over 33,000 lightning strikes across 24 cities in the ~~Northwest Paulista~~ South-Southeast region. ~~By September 9, atmospheric instability persisted due to a meteorological trough and the formation of an extratropical cyclone in southern Brazil. This system increased~~ Contrasting these conditions, the ~~risk of tornadoes, heavy rainfall,~~ North and intense winds. In São Paulo, the capital faced potential rainfall accumulations exceeding 100 millimeters over five days. In Paraná, storms threatened wind gusts exceeding 85 km/h. The extratropical cyclone was expected Center-West face extreme heat and dryness. Acre is experiencing temperatures up to ~~intensify~~ 38°C with relative humidity dropping to between ~~Rio Grande do Sul~~ 25% and ~~Santa Catarina, bringing further intense rain~~ 35%. Similar patterns affect Rondônia, Amazonas, and ~~temperature shifts.~~ Mato Grosso. In Minas Gerais, Uberaba faces high temperatures of 33°C and very low humidity of approximately 22%. Authorities continue to warn of risks ~~in Acre, Goiás, Rio de Janeiro,~~ including tornadoes, microbursts, heavy hail, and ~~various southern states.~~ respiratory threats due to extreme temperature fluctuations.

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