Winter storm warning: Delay all travel if possible. If you must travel, keep emergency supplies in your vehicle. The Louisville/Jefferson County Information Consortium maintains a map showing which roads are on the metro snow route and which have been plowed and salted. View it at apps.lojic.org/metrosnowroutes.

A winter storm warning was issued for the Columbia area of South Carolina where snow and freezing cold temperatures are expected Tuesday, according to the National Weather Service. A winter weather advisory was previously scheduled to go into effect for Richland and Lexington counties,

The First Alert Weather Team says heavy snow has impacted much of the Deep South through Tuesday from New Orleans to Pensacola.