After this weekend's snow storm moves out, cold Arctic air will move in.

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map ...

Ben Gelber, a meteorologist for NBC4 in Columbus, Ohio, and a Pocono native, said the polar vortex is a large, circular pool ...

With over 170 million Americans facing below average temperatures, even colder air may be on the horizon thanks to the ...

The polar jet stream, which is affected by the polar vortex above it, has become quite wavy, allowing Arctic air to ...

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here's what to know.

Aircraft wake vortex dynamics encompass the study of the vortical patterns generated by an aircraft during flight, which have significant implications for aviation safety and airport capacity. These ...

What is the polar vortex? It’s a wintertime mainstay capable of flooding Canada with some of the world’s coldest air ...