The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma in the coming days and ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.

A polar vortex has blanketed much of the US with ice, snow, and intense winds, stretching from the Rockies to Maine. This ...

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 ...

A major winter blast of snow, ice, high winds and plunging temperatures are stirring up dangerous conditions across the U.S.

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 ...