NOAA has declared that a La Niña is underway. This cool weather event is likely to be shorter and weaker than usual, but will ...

Weather patterns across the U.S. and the world from October through December resembled patterns from previous La Niña events.

A long-awaited La Niña has finally appeared, but meteorologists say the periodic cooling of Pacific Ocean waters is weak and ...

La Niña is ENSO’s cool phase, while El Niño is its warm phase. NOAA’s weather models show there’s a 59% chance the current La Niña conditions will last until sometime between February and ...

By Shanna Hanbury It’s official: a weak La Niña came into fruition in late December and is expected, with significant ...

The official designations by NOAA of "La Niña" and "El Niño" haven’t been around long, with widespread usage only dating back to the 1980s.

A long-awaited La Nina has finally appeared, but meteorologists say the periodic cooling of Pacific Ocean waters is weak and ...

“El Niño Southern Oscillation (ENSO) events peak in the Northern Hemisphere during the winter, and there’s just not a lot of time for La Niña to strengthen,” NOAA said. The La Niña and ...

Its delayed arrival may have been influenced by the world's oceans being much warmer the last few years, said Michelle L'Heureux, head of NOAA's El Nino team. “It’s totally not clear why this ...

La Niña is finally here. The National Oceanic and Atmospheric Administration announced that conditions have officially formed ...

according to the NOAA. They generally occur every two to seven years, with transition periods in between, but they don’t occur on a regular schedule. During El Nino, warmer Pacific water helps ...