The pattern had been predicted to form for several months, and weak La Niña conditions were finally officially met this week.

Overall, it looks like the coldest part of the weekend will be Sunday into Monday (MLK Day). Dani Hallows has your forecast ...

Imagine the polar vortex as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the north ...

Behind that system, bitterly cold air returns to Southern New England. Highs on Tuesday may not get out of the teens, with ...

We are halfway through the meteorological winter season. See how La Niña and colder air has influenced our winter so far.

NOAA's Climate Prediction Center (CPC) announced Thursday that water temperatures in critical parts of the Pacific Ocean had ...

With the winter season in full swing - many are wondering where the snow's at . While we’ve had a few light snowfalls, the ...

Some of the pieces of a meaningful snowstorm are here. What are these puzzle pieces and when could they come together?

After Philadelphia's first winter storm of the year, windy and cold conditions follow this week as feels-like temperatures ...