The wind chills as low as 15 degrees are expected for parts of Alabama, Georgia and Florida Thursday evening into Friday morning.
Snow totals in Louisiana have broken records. Parts of Florida, Texas and Georgia have also accumulated several inches of snow.
The National Weather Service (NWS) said in one of its Thursday statements, "Black ice is difficult to see and distinguish from dry surfaces. The deceptive nature of black ice can catch you unaware while you are driving or walking, causing you to lose control of your motor vehicle or to slip and fall."
More than 220 million people across the United States are facing dangerous cold that will also open the door for a potentially historic and crippling winter storm that could deliver snow as far south as Florida and the Gulf of Mexico.
Winter storm warnings are in place in several states with heavy snow, freezing rain and dangerously cold temperatures expected.
Officials warned residents across the South that the effects of a major winter storm were not over, and that driving remained a hazard on roads frozen with slippery ice.
Follow NBC News live updates for the latest coverage of the freezing winter weather affecting large swaths of the U.S., from the Midwest to the South.
Over 175 million people across the country are under some form of cold weather alert as the mid-Atlantic ... its way east along the Gulf Coast and southeast United States on Tuesday, the National Weather Service said in a forecast discussion.
Rain began falling in parched Southern California on Saturday in a boon for firefighters who were mopping up multiple wildfires. But heavy downpours on charred hillsides
The 10,396-acre Hughes fire reached 56% containment Friday as first responders made progress controlling multiple blazes burning in Los Angeles County, which is expected to receive rain over the weekend that could be capable of producing floods and mudslides in several burned areas.
President Donald Trump will visit areas devastated by floods in North Carolina and fires in California, as debates rage about recovery and funding.
A major storm spread heavy snow, sleet and freezing rain across the southern United States on Wednesday, breaking snow records and treating the region to