Tennessee, along with most of the lower 48 states, can expect a blast of cold air thanks to a polar vortex. The term has recently become popularized describe any blast of arctic air that gives us ...

The polar vortex is coming back ... bringing accumulating snow or ice to around a dozen states, flooding to the Tennessee and Ohio valleys, and a severe line of thunderstorms and possible ...

The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...