It has been a warm autumn so far. But the polar vortex is forecast to change unusually early, and that could impact your weather in December. Meteorologist Rob Shackelford breaks down why. Fantasy ...

Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, ...

The polar vortex has broken, and severe temperatures are set to dominate most of the country in the coming days. Temperatures in the 10s are forecast for much of the Northeast, and subzero ...

It seems like you cannot mention cold weather in the fall and winter without coming across the phrase “polar vortex.” Meteorologists often refer to this weather element as a potential culprit behind ...

As one blast of Arctic air pushes out to sea, already a new surge of cold air, driven by a breakdown of the polar vortex, is likely to expand from central Canada and through the midwestern and eastern ...

Bundle up. This weekend will get seriously cold. The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a wrecking ball," said ...

ORLANDO, Fla. – Polar vortex. Sudden stratospheric warming. The winter buzz words are back. But what do they mean? Here’s the deal. You may hear polar vortex and sudden stratospheric warming thrown ...

Boston has seen just one day so far this month where the average temperature was above the seasonal norm, daring me to ask — are you over the cold yet? Astronomical winter hasn’t even arrived (that ...