Two major weather agencies think it's increasingly likely that El Niño will form in the eastern tropical Pacific Ocean later ...

Something is stirring in the Pacific, and meteorologists are paying close attention. A familiar but powerful climate pattern may be on the move, and if it fully takes shape, millions of Americans ...

The large-scale Pacific Ocean climate patterns that help steer weather patterns around the globe are shifting yet again.

The Pacific Ocean is warming so quickly that scientists had to find a new method for detecting and predicting El Niño and La Niña events.

A major shift may be brewing in the Pacific Ocean: Forecasters say El Niño could develop later this year. If it does, it can reshape weather patterns across the United States during the second half of ...