NOAA Warns of Potentially Record-Breaking El Nino in 2026-27

The US National Oceanic and Atmospheric Administration (NOAA) has confirmed that El Nino conditions have developed in the tropical Pacific Ocean and are expected to strengthen through the Northern Hemisphere winter of 2026-27. Forecasters estimate a 63% chance that this El Nino could become a 'very strong' event between November and January, potentially ranking among the most powerful since records began in 1950.

The rapid transition from La Nina—the cooler counterpart—earlier this year to a potentially strong El Nino has drawn attention from climate scientists worldwide. Such a shift within a single year is relatively uncommon and raises concerns about significant weather disruptions across multiple continents.

Adding to the concern is an extensive marine heatwave that has developed across parts of the North Pacific since late 2025. Researchers are investigating whether this vast stretch of unusually warm ocean water is contributing to the strengthening of El Nino and affecting marine ecosystems and fisheries. While the exact relationship remains under study, scientists say the simultaneous occurrence of both phenomena could amplify climate impacts in some regions.

An analysis by climate scientist Zeke Hausfather suggests the 2026 El Nino could surpass both the 1997-98 and 2015-16 events. The gap between the strongest and fifth-strongest El Nino events since 1877 is just 0.5 degrees Celsius, yet the 2026 event alone is projected to exceed the previous record by about 0.8 degrees Celsius. However, experts caution that such projections carry uncertainty.

The UK Met Office has indicated that the current event could be comparable to some of the most powerful El Ninos in recent decades, though it does not officially use informal labels such as 'super El Nino' or 'Godzilla El Nino'. These terms are sometimes used by forecasters and media to describe events where sea surface temperatures in the central and eastern Pacific rise more than 2 degrees Celsius above average.

Climate change may magnify the consequences of the developing El Nino. While global warming does not cause El Nino, it increases baseline temperatures, meaning that El Nino-driven heat is added on top of an already warmer planet. Scientists warn this combination could push temperatures in some regions to unprecedented levels and increase the likelihood of extreme weather events.

The anticipated impacts are widespread. Regions along parts of the Pacific basin could experience significantly wetter conditions, while Australia, Indonesia and much of Southeast Asia may face an elevated risk of drought. In the United States, El Nino can shift storm tracks southward, bringing wetter and stormier conditions to southern states and increasing the risk of coastal flooding. However, experts note that local outcomes vary and no two El Nino events are exactly alike.

Perhaps the greatest concern is the effect on global temperatures. El Nino's warming influence often peaks months after the event reaches maximum strength, meaning its largest impact may be felt in 2027. As a result, scientists say 2027 could challenge global temperature records, with potential consequences for agriculture, water resources, coral reefs and fisheries worldwide.

Despite the forecasts, experts stress that there is no reason for panic. Climate outlooks can evolve as oceanic and atmospheric conditions change. Nevertheless, governments, communities and industries are urged to prepare for the possibility of a powerful El Nino and the wide-ranging weather extremes that often accompany it.