In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...

The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or shifts, Arctic air can spill south, increasing the risk of snow and ...

A highly unusual disruption of the polar vortex is taking shape in the upper atmosphere this November, raising the odds of a more volatile and wintry pattern as the season ramps up. Instead of the ...

The polar vortex, a mass of cold air over the Arctic, is beginning its seasonal strengthening. A strong polar vortex typically keeps the coldest air locked near the North Pole. A weaker or wobbling ...

The Earth's polar vortex is stirring up, bringing the first hints of changing weather as the autumn foliage starts to turn and the temperatures begin to drop. The movement means gradual cooling and a ...

The polar vortex is a large region of low pressure and cold air that has always existed around Earth's poles. While the polar vortex is weakening for the season, it does not directly cause winter ...

View post: Winter Storm Warnings for 26 Inches of Snow in 8 States Emerge A cold front will bring plunging temperatures and snow to the Northeast this week. Polar vortex disruptions, caused by Sudden ...

(CNN) — High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...

Folks in the central and eastern United States may be wondering: Is winter on the way out? Here's what meteorologists say.