A First Alert Weather Day has been issued for Wednesday due to cold and snow. A winter storm has moved into Colorado's mountains, bringing widespread snow, with 1 to 3 feet of accumulation possible by Wednesday afternoon.

Winter is tightening its icy grip across much of the country, with a string of states slapped with weather warnings this week amid fears of treacherous conditions. Reduced visibility and heavy snow—up to 6 feet of snow accumulation in some parts—are forecast just days away from Thanksgiving.