A brutal Arctic air mass is about to take over the United States

Temperatures as much as 30 to 50 degrees below normal are entering the Northern Plains as we close out the workweek. Through the weekend, brutal conditions you might expect in a frigid January overtake the central portion of the country, from the Mexican to the Canadian borders.
from https://www.washingtonpost.com/weather/2019/03/01/brutal-arctic-air-mass-is-about-take-over-united-states/
https://www.washingtonpost.com/resizer/ksrkbGUSkGlTQ81Uq3Jm73Nx0b0=/1100x0/arc-anglerfish-washpost-prod-washpost.s3.amazonaws.com/public/XRZWXYWVLFEERO3QO3R53PO4JQ.gif