Something is stirring in the Pacific, and meteorologists are paying close attention. A familiar but powerful climate pattern ...

A major shift may be brewing in the Pacific Ocean: Forecasters say El Niño could develop later this year. If it does, it can ...

NOAA is to start using a new index, known as 'RONI,' to classify El Niño and La Niña events.

The powerful weather pattern is expected to shift into gear again around June, NOAA said, though its strength this time ...

A major oceanic transition is underway as warming waters in the Pacific signal a transformative shift for global weather.

While La Niña is currently holding its own, the expectation is that an El Niño will develop by the peak of hurricane season. Here's why that's a big deal.

A new study calculated that an unusual recent twist in the warming and cooling cycle that includes El Niño and its counterpart La Niña can help explain the scientific mystery of why Earth’s already ...

The El Niño Southern Oscillation (ENSO) is a natural pattern of ocean and atmospheric changes in the tropical Pacific Ocean that can influence the weather pattern ...

Rules for classifying the two patterns recently changed.

El Nino could develop later this year, increasing the risk of record-breaking global heat, according to forecasts from several major weather agencies.

LOS ANGELES (KABC) -- California appears poised to go from severe drought to torrential rains and widespread flooding with the expected arrival of El Nino this winter. State legislators discussed what ...

A study has identified a key change that has amplified the impact of El Niño on Arctic sea ice. The effect has been observed ...