Meteorologists say a weak La Nina weather event has arrived but will bring fewer storms than usual. Here's how the Pacific El Nino and La Nina weather phases can influence extreme weather globally.

The episodes happen at irregular intervals every two to seven years, and usually last nine to 12 months. Both El Niño and La Niña can affect weather patterns across the world. Although each ...

The climate pattern known as the El Niño-Southern Oscillation shifts irregularly between episodes of El Niño, La Niña and neutral conditions, when neither El Niño nor La Niña is present ...

This spot is famous for creating oscillating weather patterns known as El Niño and La Niña. Here's how these patterns control winter weather in the United States. Following is a transcript of ...