RELATED: Polar vortex is bringing bitterly cold temps ... reflected in very low dew points. The center of this Arctic high-pressure system is forecast to position itself northwest of our region.

This is being driven by a break down in the polar vortex allowing the cold air ... is the very dry air moving in along with the cold. Dew points are a measure of how much moisture is in the ...

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

Miles above the Earth, two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes ... Until temperatures reach a point that it’s too warm to snow ...

This Seal commercial with Seal playing a…seal? This is is weird. Too weird! It’s technically a Mountain Dew commercial. I’m not sure exactly what’s going on in it. I just know that Seal is ...

The system, known as a polar vortex, is forecast to bring subzero temperatures to the Midwest, Mid-Atlantic and deep into the South. And it looks as if we may get more arctic blasts in the coming ...

Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame. Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET.