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 ...

Storm Blair has hit most of the U.S., bringing freezing temperatures to Texas. Precipitation later this week could mean snow ...

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 ...

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

Several governors across the US issued warnings to residents to stay at home and off the road as the polar vortex struck deep ...

Much of the U.S. is being blasted by ice, snow and wind, as the polar vortex that dipped south over the weekend is keeping an area stretching from the Rocky ...

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 ...

Much of the U.S. is being blasted by ice, snow and wind, as the polar vortex that dipped south over the weekend is keeping an ...

Let's jump into the polar vortex on this week's Weather IQ. The polar vortex refers to a large area of cold air that sits in the upper atmosphere over the poles. This area of air is kept in place in ...