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 ...

The cold temperatures are coming from a not uncommon expansion in the Polar Vortex, which are counter-clockwise rotating air ...

Like much of the U.S., Wisconsinites woke up Tuesday morning to bitter cold conditions. Many schools and colleges throughout ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

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

In Indiana, around zero degrees was likely, the map showed, with temperatures of around three degrees possible in Northern ...

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

This blast of cold weather is due to activity of the polar vortex.

The coldest weather of the season to date will be due to a phenomenon called a polar vortex, an upper-level jet stream that ...

CLEVELAND, Ohio — Temperatures today and Saturday will reach the mid-30s in Northeast Ohio. Residents should make a point of ...