A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.

A huge swathe of the US has been hit with ice, snow and wind as the polar vortex that dipped south over the weekend kept much of the country in its frigid grip, making many roads treacherous, forcing school closures,

An arctic front will sweep across Texas, bringing freezing temperatures and snow chances, NOAA reports with impacts expected statewide by Sunday.

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into next week, impacting millions of Americans in nearly all of the contiguous states.

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia will arrive from Canada by week’s end, bringing with it dangerously cold wind chills for millions of Americans.