Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures as tens of millions of residents along the East Coast contend ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

ANNAPOLIS, Md. (AP) — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies ...

We start the following work week with a polar vortex. This will bring in unseasonably cold air to the region and wind chill ...

These conditions are all thanks to a familiar sounding occurrence: the polar vortex, a large area of low pressure and cold ...

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

NORFOLK, Va. (AP) — The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma ...

While the term "polar vortex" might seem like a new phenomenon, the phrase has only recently become popularized in weather forecasts, especially when it reaches into the southern plains states ...