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[INTERNATIONAL] · Brazil · 100 sources

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Cyclone bomb drives severe storms and tornadoes in southern Brazil

A rapidly intensifying extratropical cyclone, popularly called a “cyclone bomb”, began forming over the South Atlantic near Uruguay on 4 August 2026 and deepened between 6 and 8 August. The system generated a strong cold front that swept across southern Brazil, producing extreme wind gusts, heavy rain, hail and tornadoes.

Wind speeds reached up to 132 km/h in Porto Alegre, with gusts of 100‑130 km/h reported across Rio Grande do Sul, Santa Catarina, Paraná and São Paulo. The Instituto Nacional de Meteorologia (INMET) issued red alerts for Rio Grande do Sul and orange alerts for several states, warning of rain exceeding 60 mm per hour, hail, and wind damage. State civil defence agencies activated crisis cabinets and sent emergency alerts, including a red alert for tornado risk in Rio Grande do Sul.

A tornado touched down in the municipality of Pedro Osório (Rio Grande do Sul) on 6 August, while Atibaia in São Paulo warned of gusts up to 120 km/h. The cold front also caused temperatures to fall about 10 °C in Curitiba and other parts of Paraná. Power outages affected tens of thousands of customers, and large hailstones were reported in several municipalities of Rio Grande do Sul.

Entities

Argentina · Atibaia · Cyclone bomb · Cyclone bomb (extratropical cyclone) · Defence Civil of Rio Grande do Sul · Defence Civil of São Paulo · Defense Civil of Rio Grande do Sul · Defense Civil of São Paulo · Defesa Civil do Rio Grande do Sul · Instituto Nacional de Meteorologia (INMET) · Mato Grosso do Sul · Micael Cecchini

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Sources

about 2 months ago
Entenda o que é um ciclone-bomba [portalgilbertosilva.com.br]
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