El Niño may take shape later this year, and the ripple effects could show up in U.S. weather during the second half of 2026.

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

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

The tools scientists have relied on for decades to track El Niño and La Niña are breaking down, and the reason is ...

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

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 transition from La Nina to ENSO - neutral is expected from February through April (60% chance). There’s also a chance this phase will continue through this summer ...

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.

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 ...

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 ...