The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

An extreme cold warning from Environment Canada for Hamilton is expected to continue through Wednesday morning, with ...

Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures ...

Much of the U.S. from the Rockies into the Northern Plains will see colder than normal temperatures starting Sunday into the ...

A rush of Arctic air will plunge parts of North America into bitter cold this weekend, bringing heavy snow, strong winds and ...

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

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

The polar vortex is always around. It is a channel of strong winds high up in the atmosphere that circles the poles. One over ...

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...

Our next outbreak of bitterly air will arrive next week, plunging temperatures well below average for a time. But where does this cold air come from? It has an Arctic origin near the North pole! A ...

NEW ORLEANS -- The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar ...