From Newsweek:
At the time of writing, extreme cold warnings had been issued in the following states:
- Montana
- North Dakota
- South Dakota
- Minnesota
- Wisconsin
- Nebraska
- Iowa
- Kansas
- Colorado
- Oklahoma
- Arkansas
- Texas
- Tennessee
- Mississippi
- New Mexico
- Missouri
In Montana’s Carter, Custer and Fallon Counties, the NWS said “dangerously cold” wind chills as low as 45 below were occurring.