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

The long-awaited La Niña has finally arrived but it is weak and meteorologists say it's unlikely to cause as many weather ...

Weak La Niña conditions have formed and will likely last into early spring, according to a monthly update released by NOAA Thursday. A La Niña advisory is in effect. La Niña occurs when the ...

While La Niña arrived late this season, scientists forecast it will likely be weak, NOAA said. There’s a 59% chance La Niña will persist through February, March and April, followed by a 60% ...

La Niña conditions were finally officially met this week, the National Oceanic and Atmospheric Administration (NOAA) said. But those conditions are only expected to stick around until the spring ...

El Niño and La Niña conditions can last for months or several years, according to the NOAA. They generally occur every two to seven years, with transition periods in between, but they don’t ...

Warmer than normal temperatures are possible over large swaths of the U.S., according to NWS, in part because of the lowered seawater temperatures of La Niña. The map is valid from January to ...