A handful of northwestern states were under winter storm watch from the NWS on Thursday, with the service warning of potential impacts to travel.
The wind chills as low as 15 degrees are expected for parts of Alabama, Georgia and Florida Thursday evening into Friday morning.
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.
Snow totals in Louisiana have broken records. Parts of Florida, Texas and Georgia have also accumulated several inches of snow.
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.
Memphis is set to get hit with a cold weather system early this week that could drop wind chills to as low as 5 degrees.
Hundreds of first responders are diving in frigid water looking for survivors after a passenger plane collided with a US Army helicopter midair at Reagan National Airport near Washington, DC, Wednesday.
ARLINGTON, Va. (AP) — At least 28 bodies were pulled from the icy waters of the Potomac River after an American Airlines jet carrying 60 passengers and four crew members collided with an Army helicopter while landing at Ronald Reagan National Airport near Washington, officials said Thursday.
An American Airlines regional jet and a US Army Black Hawk helicopter collided mid-air near Reagan Washington National Airport, crashing into the Potomac River.
A family with Georgia ties is grieving after learning their loved one was one of the pilots killed in the crash between a small American Airlines plane and a military helicopter crash near Reagan National Airport.
An American Airlines jet carrying 60 passengers and four crew members has collided with an Army helicopter while landing at Ronald Reagan National Airport near Washington, prompting a large search-and-rescue operation in the nearby Potomac River.
DC Fire and EMS Chief John Donnelly shared details on the conditions of the water as responders continue their efforts to find more victims from the deadly plane collision near Reagan National Airport.