CHICAGO — Icy, snow-covered roads and high winds made travel treacherous Sunday from the Dakotas and Michigan to Missouri as much of the nation braced for the next winter wallop: a dangerous cold that could break records.
A whirlpool of frigid, dense air known as a “polar vortex” was expected to suppress temperatures in more than half of the continental U.S. starting into Monday and Tuesday, with wind chill warnings stretching from Montana to Alabama.
It was 5 degrees at kickoff Sunday afternoon inside sold-out Lambeau Field for a playoff game between the Green Bay Packers and the San Francisco 49ers, one of the coldest ever played.
“We suited up, we brought all the snowboarding gear we use ... and added to it,” said 49ers fan Jeff Giardinelli of Fresno, Calif. “Without the wind, which isn’t here yet, we’re good. When it gets windy, we’ll be ready for it.”
The forecast is extreme: 25 below zero in Fargo, N.D., minus 31 in International Falls, Minn., and minus 15 in Indianapolis and Chicago. Wind chills — what it feels like outside when high winds are factored into the temperature — could drop into the minus 50s and 60s. Northeastern Montana was warned of wind chills up to 59 below zero.
“It’s just a dangerous cold,” said National Weather Service meteorologist Butch Dye in Missouri.
Several Midwestern states received up to a foot of new snow Sunday. The National Weather Service said snowfall at O’Hare International Airport in Chicago totaled more than 11 inches as of 6 p.m. Sunday — the most since the Feb. 2, 2011, storm.
The St. Louis area had about a foot of snow and northern Indiana had at least 8 inches.
Officials closed several Illinois roadways because of drifting snow and warned residents to stay inside. Roads in the Midwest were particularly dangerous, and officials in Missouri said it was too cold for rock salt to be very effective.