SIOUX FALLS, S.D. - The deep freeze expected soon in the Midwest, New England and even the South will be one to remember, with potential record-low temperatures heightening fears of frostbite and hypothermia.
It hasn't been this cold for decades - 20 years in Washington, D.C., 18 years in Milwaukee, 15 in Missouri - even in the Midwest, where bundling up is second nature. Weather Bell meteorologist Ryan Maue said, "If you're under 40 (years old), you've not seen this stuff before."
Preceded by snow in much of the Midwest, the frigid air will begin Sunday and extend into early next week, funneled as far south as the Gulf Coast. Blame it on a "polar vortex," as one meteorologist calls it, a counterclockwise-rotating pool of cold, dense air.
Sledding enthusiasts take to Cricket Hill at Montrose Beach Park Friday, in Chicago. Single-digit temperatures are hitting Illinois after the state was blanketed in snow. Meanwhile, residents are bracing for a deep freeze. Highs early next week likely won't reach zero and wind chills could sink to 45 below.
"It's just a large area of very cold air that comes down, forms over the North Pole or polar regions ... usually stays in Canada, but this time it's going to come all the way into the eastern United States," said National Weather Service meteorologist Phillip Schumacher in Sioux Falls, S.D.