@foxweather: 🐻❄️🥶WHAT IS THE POLAR VORTEX?: During a significant snowstorm or a freezing cold snap, you may hear the term "polar vortex" bandied about. FOX Weather Meteorologist @ariweatherexplains what exactly the polar vortex is, how it works and how it influences our weather. #arctic #cold #polar #polarvortex #atmosphere