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

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 ...

A new index will help scientists and forecasters better identify El Niño and La Niña events in the future as the climate ...

El Niño might be back later this year; major climate agencies that closely watch the tropical Pacific have recently updated ...

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 ...

A transition from El Niño-Southern Oscillation-neutral conditions to La Niña conditions is looking likely, according to a Sept. 11 outlook by the National Weather Service’s Climate Prediction Center.

A new study by researchers from the University of Texas at Austin found that El Niño and La Niña cause extreme water events ...

Rules for classifying the two patterns recently changed.

After just a few months, the world's La Niña pattern appears to be on the decline, but its demise will not result in any changes to the winter forecast. According to NOAA’s latest El Niño–Southern ...

The El Niño-Southern Oscillation, also known as ENSO, is a phenomenon that occurs in the tropical Pacific Ocean. When average water temperatures are above average, it dictates that an El Niño is ...

The Climate Prediction Center said there's a 60% chance the climate phenomenon exits between February and April this year.

ELMIRA, N.Y. (WETM)- Global weather is greatly influenced by changes in tropical Pacific Ocean temperatures, through a climate pattern known as The El Niño-Southern Oscillation (ENSO). ENSO (El ...