Early atmospheric changes associated with adeveloping El Niño eventare beginning to appear in long-range weather forecasts, with meteorologists monitoring how the Pacific Ocean warming pattern could influence weather across the United States and Canada during the months ahead.
Analysis published by Severe Weather Europe said recent ocean and atmospheric data show the first signs ofEl Niñobeginning to affect broader weather patterns. The report pointed to warming sea-surface temperatures in the equatorial Pacific and emerging shifts in air circulation that could become more pronounced through summer and into late 2026.
While the event remains under observation, long-range forecast models suggest parts of North America could experience notable differences in temperature, rainfall and pressure patterns compared with recent years. Seasonal outlooks remain subject to change, and individual weather events cannot be attributed to El Niño alone.
According toSevere Weather Europe, forecast data indicate the warming event is entering a stronger phase, with conditions across the tropical Pacific becoming increasingly consistent with El Niño development.
The analysis highlighted warming ocean temperatures across key regions of the tropical Pacific, alongside changes in atmospheric circulation that are often associated with El Niño conditions. Stronger westerly winds and a large subsurface pool of warm water, known as a Kelvin Wave, have helped reinforce the warming trend.
🚨: The 2026 “Super El Niño” is projected to be the strongest in 150 yearspic.twitter.com/uifb45kQil
2026 and 1997 are El Niño twins. But they didn't always look alike.Subsurface ocean warmth developed faster in 1997, but 2026 caught up following a record-breaking Kelvin wave that formed in April.A new westerly wind burst into June will keep these two years neck and neck.pic.twitter.com/LxlsU77sUv
The report also identified changes in the Walker Circulation, a large-scale tropical air circulation system that often shifts during El Niño events. Such changes can influence jet stream patterns and alter weather conditions far beyond the Pacific Ocean. While some models project a very strong El Niño later in the year, the outlook notes that the event is still developing and its eventual intensity remains uncertain.
The June outlook examined by Severe Weather Europe suggests some of the earliest atmospheric impacts may already be appearing across North America.
Forecast pressure maps indicate a tendency for lower pressure over eastern Canada and parts of the north-eastern United States, while higher pressure is projected across portions of the western and central United States and western Canada.
Source: International Business Times UK
