Super El Niño Strengthens, Forecasts Reach Record Levels
A rapidly intensifying Super El Niño in the tropical Pacific is pushing forecasts into historic territory for 2026-2027. Record-level westerly wind bursts and a powerful subsurface Kelvin wave are fueling surface warming, while seasonal models predict significant impacts across the United States, Canada and Europe.
Rapid Growth and Record-Setting Forecasts
The latest long-range forecasts from the severe-weather.eu team show the 2026 Super El Niño’s projected peak rising again, placing the event deeper into historic territory later this year. The analysis highlights a rapid strengthening that has already surpassed the 2015-2016 Super El Niño in speed and strength, according to the author.
The report notes that the event is developing at an exceptional rate, with the 30-day ocean temperature anomaly change exceeding 1.5 °C over a large area. This trend indicates at least three more months of continued growth.
Oceanic Drivers: Kelvin Wave and Heat Anomalies
Ocean data reveal surface temperature anomalies of more than 5 °C above normal in the eastern tropical Pacific, peaking at over 6 °C. Beneath the surface, the top 250 m show a Kelvin wave with peak anomalies exceeding 9 °C above normal, pushing warm water eastward and rising toward the surface.
These subsurface anomalies are described as the “engine” of the 2026-2027 Super El Niño, providing a continuous supply of thermal energy that keeps the event strong well into winter.
Atmospheric Support: Record Westerly Wind Bursts
ERA5 wind analysis for June and July 2026 shows the western and central equatorial Pacific experiencing the strongest low-level westerly wind anomalies on record over an 86-year period. The sustained trade-wind collapse is interpreted as a key atmospheric driver that supports the rapid El Niño development.
The extended-range ECMWF forecast maintains continuous westerly wind anomalies across the western and central Pacific through late September, indicating robust ocean-atmosphere coupling that will continue to suppress trade winds and fuel warming.
Implications for the Northern Hemisphere
The author notes that the Super El Niño’s strong warm anomaly in the central and eastern tropical Pacific places it close to North America, suggesting direct and strong seasonal weather impacts for the United States and Canada. The report also references predictions for the fall and winter of 2026/2027, indicating that the United States, Canada and Europe are likely to experience altered pressure patterns, winds, rainfall and storm tracks.
Seasonal models are said to underpredict the initial rapid growth because they cannot simulate individual westerly wind events, which are crucial for El Niño strength. This limitation means the true extent of the 2026 Super El Niño was hidden until recent weeks.
The severe-weather.eu analysis concludes that the 2026 event is among the strongest in the historical record, with record-level wind and oceanic conditions driving its rapid ascent into winter.
