When sea-surface temperatures are above average by about 1 degree Fahrenheit or more, El Niño can develop. When temperatures are below average, La Niña can form. When temperatures are at or near ...

El Niño and La Niña are parts of an oscillation in the ocean-atmosphere system (called the El Niño Southern Oscillation, or ENSO cycle) that can impact weather and climate conditions across the ...

Aliza Chasan is a Digital Content Producer for "60 Minutes" and CBSNews.com. She has previously written for outlets including PIX11 News, The New York Daily News, Inside Edition and DNAinfo.

The butterfly effect suggests that small changes in a system can have a large impact on eventual outcomes. One metaphor used ...

A new international study led by researchers at Tulane University shows that the El Niño and La Niña climate patterns affect nearly half of the world's mangrove forests, underscoring the vulnerability ...

However, one agricultural meteorologist says as El Niño fades, La Niña is already knocking at the door, and it could bring dryness to the southern U.S. The biggest question is now timing.

This page contains information on El Niño, La Niña, and how these important ... including here in Canada. Diagram image courtesy of NOAA. Under normal conditions, prevailing winds blow from ...

Marked by colder surface water in the eastern Pacific — in contrast to El Nino events that bring hotter waters — La Nina ...

Neutral conditions prevail when El Niño and La Niña are (temporarily) absent El Niño and La Niña are two extremes that have far-reaching effects on our weather here in Canada and around the world.