A rare ‘Super’ El Niño may be brewing, faster than anyone expected

Why it matters: A rapidly strengthening El Niño in the Pacific is raising the risk of extreme weather events, food and water stress, and another surge in global temperatures at a time when climate systems are already under pressure from long-term warming.What’s happening: The latest update from the NOAA Climate Prediction Center shows El Niño is developing faster than earlier forecasts suggested, according to a CNN report. There is now about a two-thirds chance the event strengthens into a strong or very strong phase by fall or winter, while the probability of a rare “Super” El Niño has risen to roughly one in three, the report added.

El Niño is a recurring climate phenomenon caused by unusually warm ocean waters in the tropical Pacific. That warming alters atmospheric circulation patterns, influencing rainfall, temperatures and storm systems across the globe.
Why it matters now: Scientists say the event is forming against a backdrop of already elevated global temperatures driven by climate change. That means even a moderate El Niño could produce outsized and less predictable impacts.The phenomenon is linked to heatwaves, droughts and wildfire risks in some regions, while others may face flooding and intense rainfall. It can also temporarily raise global temperatures further, increasing the chances that 2026 or 2027 become the hottest years on record.

What’s driving the shift: Forecasters point to a large reservoir of warm subsurface water in the central and eastern Pacific that is expected to rise and sustain the event. Weakening equatorial winds and other atmospheric changes could further amplify warming if ocean-atmosphere feedback loops fully align.

The big picture: Past El Niño events have disrupted agriculture, strained water supplies and complicated energy planning worldwide. Scientists caution there is still uncertainty over whether this episode reaches “Super” status, but even a strong El Niño could significantly disrupt monsoons, hurricane activity and seasonal weather patterns across Asia, Africa and the Americas.