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Researchers Warn “Super El Niño” Could Cause Nearly Half a Million Deaths by Early 2027
A powerful “super El Niño” event unfolding this year is projected to cause approximately 451,000 excess deaths worldwide within the next six months, according to new research from the University of Chicago’s Climate Impact Lab. The study, released Wednesday, attributes these fatalities primarily to extreme heat associated with the climate phenomenon.
The countries expected to be hardest hit by heat-related deaths include Nigeria, with an estimated 31,400 fatalities, followed by Indonesia with 19,300, and Sudan with 17,600. Additionally, the Sahel region of Africa-which spans semi-arid countries such as Niger, Chad, Nigeria, and Sudan-could face around 66,800 deaths due to soaring temperatures.
Scientists emphasize that if El Niño conditions persist into 2027, the death toll could rise further, particularly in vulnerable regions like India and Pakistan, which are prone to extreme heat during summer months. Beyond heat-related mortality, El Niño is also linked to droughts, wildfires, and flooding, all of which pose significant risks to global populations.
The current super El Niño has already broken records, registering the highest temperatures ever observed for such an event months before its anticipated peak. Experts have described the intensity of the heat as “mind-blowing” and “Godzilla-level,” underscoring the severity of this climate anomaly. The Climate Impact Lab characterized this year’s El Niño as a “postcard from the future,” warning that such extreme temperatures could become the norm in the coming decades.
In light of these findings, researchers urge immediate implementation of emergency response plans in the most vulnerable regions to mitigate heat-related mortality. Michael Greenstone, an economist at the University of Chicago and co-founder of the Climate Impact Lab, highlighted the urgency of action: “This report allows decision makers to see exactly where emergency actions can be taken now to save tens of thousands of lives in the coming months.”
Understanding El Niño
El Niño, which means “little boy” in Spanish, refers to a periodic climate pattern characterized by the weakening or reversal of the trade winds that typically blow from east to west along the equator. This shift causes warmer ocean waters to spread across the central and eastern Pacific, altering the jet stream and disrupting weather patterns globally.
El Niño events occur irregularly every 2 to 10 years, with each event varying in strength and impact. They influence weather conditions around the world, contributing to phenomena such as altered rainfall, temperature fluctuations, and extreme weather events in the United States and beyond.
As the world faces this unprecedented super El Niño, scientists and policymakers alike are bracing for the substantial human and environmental toll it may bring in the months ahead.