Rules for classifying the two patterns recently changed.

El Nino warps weather worldwide. Meteorologists say the natural El Nino cycle is both adding to and feeling the heat of a warming world. A new study says a shift from a rare three‑year La Nina to ...

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.

La Niña's transition to neutral conditions in the eastern Pacific may influence Atlantic hurricane activity and Texas weather ...

You may have heard of El Niño and La Niña before, but what exactly are they? El Niño and La Niña are two of the three different phases of what is called the El Niño Southern Oscillation, or ENSO. ENSO ...

Feb 12 (Reuters) - There is a 60% chance of a shift in the climate phenomenon known as La Niña towards El Nino in ...

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

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.

CLEVELAND — Hundreds of years ago, fishermen casting their nets off the coast of Peru and Ecuador noticed something unusual. Every few years, the ocean water in their usually productive fishing ...

After years locked in a La Niña pattern, the Pacific is flipping. Major global climate models are now signaling a rapid ...