Super El Niño brings record flow at Foz do Iguaçu Falls

Seven tornadoes were confirmed between November 2 and 7, 2026, according to Climatempo data updated to 3 p.m. on Saturday (the 7th). The record includes events confirmed by state civil defense agencies or the official authorities in each state.

• Paraná (Nov 2): Maringá recorded an F2 tornado (winds between 180 km/h and 250 km/h) with a path of about 15 km. The municipality reported roughly 900 fallen trees and 219 broken poles.
• Santa Catarina (Nov 4): Tornadoes confirmed in Chapecó (10:30 a.m.), Xanxerê (10:48 a.m.) and Rio Negrinho (1:30 p.m.). In Chapecó, about 2,400 homes were affected.
• Rio Grande do Sul:
  • Nov 4: tornadoes in rural areas of Erval Grande, Itatiba do Sul and Barra do Rio Azul, with 50 houses damaged in each municipality; Aratiba also reported damage.
  • Nov 7: tornadoes in Santo Augusto (1:18 a.m.) and Palmeira das Missões (1:54 a.m.), both struck by the same supercell. In Santo Augusto, 50 houses lost roofs, 213 people were affected, 12 were displaced and one was injured; in Palmeira das Missões, ten houses lost roofs and one person was injured.

Climatempo notes that El Niño does not directly generate tornadoes, but it increases the frequency of conditions that favor severe thunderstorms, and the trend is expected to continue throughout November and the summer.

In the Triple Frontier region, the phenomenon’s effects are already visible in the rivers: the Iguaçu Falls reached the highest flow of the year on October 26, and the Itaipu Binacional Hydroelectric Plant has been releasing water continuously since September 30.

Super El Niño 2026: In October, INMET measured a temperature anomaly of +2.47 °C in the Niño 3.4 region of the Equatorial Pacific, the highest value recorded for the month, classifying the event as very strong. The weekly anomaly reached +2.5 °C, also a historic record.