El Niño Likely to Impact U.S. Weather Starting Next Month
• El Niño, the warm phase of the El Niño–Southern Oscillation (ENSO), is expected to develop during the May-July 2026 period, according to the National Oceanic and Atmospheric Administration (NOAA). This climate pattern, driven by warming ocean temperatures in the central and eastern equatorial Pacific, disrupts global weather patterns. NOAA's Climate Prediction Center has reported an 82% chance of El Niño forming by mid-year, with a 96% likelihood of it persisting through the winter of 2026-
• Early impacts in the U.S. could include rising temperatures in the Mid-Atlantic and Northeast, increased rainfall in the Rocky Mountains and Southwest, and potential shifts in storm tracks and precipitation patterns. Some meteorologists have also raised the possibility of a “super” El Niño, which could amplify weather extremes globally. While the transition to El Niño will be gradual, its effects are expected to become more pronounced as the year progresses.
Why It's Important?
El Niño's development could bring significant weather changes across the U.S. in the coming months. Early impacts may include higher summer temperatures in the Mid-Atlantic and Northeast, as well as much-needed rainfall in the drought-stricken Rocky Mountains and Southwest. Later in the year, wetter conditions are anticipated in the southern U.S., while milder winter temperatures may occur in northern regions. Additionally, El Niño tends to increase wind shear over the Atlantic, potentially suppressing hurricane activity. If a “super” El Niño develops, it could lead to more extreme weather events, such as heavier rainfall in the South and altered jet stream patterns, with broader global implications.
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