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Full Breakdown

Severe Cyclone Causes Widespread Disruptions in São Paulo

12/12/2025, 1:00:57 AM

Cyclone Impact and Immediate Consequences

On December 10, 2025, an extratropical cyclone struck São Paulo, Brazil, resulting in significant disruptions across the metropolitan area. Wind gusts reached up to 100 kilometers per hour (62 mph), toppling trees and power lines, which left approximately 1.5 million homes and businesses without electricity by December 11. The storm's peak affected around 2 million customers, according to the Italian utility company Enel, which has faced intense scrutiny for its slow response to the outages. As of Thursday, about 1.3 million consumers remained without power, with restoration efforts ongoing.

The cyclone also severely impacted water supply services. The local water utility, Sabesp, reported that power outages hindered its ability to pump water, leading to supply disruptions across various neighborhoods. The company stated, “The long time without power to pump water heavily impacted the system. Supply is being resumed gradually.”

Air Travel Disruptions

Air travel in São Paulo was significantly affected, with nearly 400 flights canceled across major airports. Congonhas Airport, which primarily handles domestic flights, reported 31 canceled arrivals and 15 departures on December 11, following the cancellation of 181 flights the previous day. Guarulhos International Airport, one of Latin America's busiest, also experienced disruptions, with 61 arrivals and 56 departures canceled since the storm began.

Official Responses and Criticism

Enel has been under pressure from local authorities and the public regarding its handling of the power outages. The Brazilian power regulator, Aneel, demanded a detailed explanation from Enel for the prolonged outages. São Paulo Mayor Ricardo Nunes criticized the company, stating, “Every time something happens, we are left behind without electricity,” and labeled Enel as “irresponsible.” Enel has not provided a specific timeline for the restoration of services, although it has mobilized approximately 1,300 personnel to address the situation.

Economic Impact

The economic ramifications of the cyclone are already substantial, with losses for businesses and service providers in São Paulo estimated at around $290 million within the first two days of the outages. As the cyclone moves away from the region, further economic impacts are anticipated, particularly if additional weather disturbances occur.

Conflicting Reports & Gaps

While reports indicate that over 1.5 million residents were without power, some sources suggest that the number of affected customers peaked at 2.2 million. Additionally, there is no consensus on the timeline for full power restoration, with Enel yet to specify when services will be completely restored.

Verbatim Quotes

  • “The long time without power to pump water heavily impacted the system. Supply is being resumed gradually,” — Sabesp
  • “Every time something happens, we are left behind without electricity,” — Ricardo Nunes, Mayor of São Paulo
  • “Enel promises to respond but does not specify a timeline for full restoration.” — Enel SpA

As recovery efforts continue, the full extent of the cyclone's impact on São Paulo's infrastructure and economy remains to be seen.