What Is The Polar Vortex? - NBC4 Washington

    What Is The Polar Vortex?

    We are in for some extremely cold temperatures and wind chills -- all thanks to a polar vortex. Storm Team4 Chief Meteorologist Doug Kammerer explains how the polar vortex works and what is in store for us tonight and Thursday. (Published Wednesday, Dec 14, 2016) We are in for some extremely cold temperatures and wind chills -- all thanks to a polar vortex. Storm Team4 Chief Meteorologist Doug Kammerer explains... See More