Due to El Niño , they falter and change direction to turn into westerlies, bringing warm water from the western Pacific towards the Americas.
During El Niño, surface temperatures in the equatorial Pacific rise, and trade winds — east-west winds that blow near the Equator — weaken. Normally, easterly trade winds blow from the Americas towards Asia. Due to El Niño , they falter and change direction to turn into westerlies, bringing warm water from the western Pacific towards the Americas.