National Weather Service meteorologists warned of temperatures cold enough to be fatal descending across most of the nation.

Alabama, Georgia, South Carolina and North Carolina, according to the AccuWeather map. Florida is the only state with a medium and high risk of impacts, with South Florida facing the highest risk.

Flags around the country are currently being flown at half-staff to honor former President Jimmy Carter who died in December.

Tuesday and Wednesday from Texas to Florida along the Gulf Coast will see extreme winter weather including snowfall and ...