It is not just substantial snow and severe thunderstorms accompanying the winter storm crossing the nation, but also a treacherous icy mix.
The most substantial snow will center on the northern Ohio Valley states and the mid-Atlantic Sunday through Monday.
Between the I-70 and I-40 corridors in the Plains, as well as the Ohio and Tennessee valleys, the snow will either start as or fall as an icy mix. The same can be said for the southern mid-Atlantic.
Within these corridors lie Amarillo, Texas, Oklahoma City and Tulsa, Okla., Wichita, Kan., Springfield, Mo., Little Rock, Ark., Memphis and Nashville, Tenn., Louisville, Ky., Charleston, W. Va., Washington, D.C., Dover, Del., and Richmond, Va.
The icy mix will spread over these areas in a general northwest-to-southeast fashion through Monday.
Communities along the border of Texas and Oklahoma will also be subject to sleet and/or freezing rain developing on Sunday.
Even where only a thin glaze is expected, the icy mix will make untreated roads and sidewalks extremely slick and treacherous.
Substantial freezing rain could also lead to power outages. AccuWeather.com meteorologists feel that this threat is greatest from central Arkansas to Kentucky and southern West Virginia.
This includes Little Rock, Ark., Cape Girardeau, Mo., Paducah and Lexington, Ky., and Beckley, W. Va.
For Little Rock, the severe icing threat will come Sunday night after severe thunderstorms target the city during the afternoon.