Dozens of school districts in Kansas, Illinois, Missouri, and Iowa also cancelled school because of the weather. A swath of 10+ inch snowfall totals are expected, with locally higher amounts over a foot is possible-particularly in eastern Iowa/western IL.
Major cities including Kansas City, Mo., and Chicago are expecting heavy snow on Sunday.
As of 11:30 a.m., 880 flights were canceled at O'Hare with delays averaging 75 minutes, according to the Chicago Department of Aviation.
The highest recorded wind gust during the storm was 58 miles per hour Sunday morning at the Russell Municipal Airport according to the National Weather Service.
Jeff Colyer issued a state of emergency declaration for the state and officials said road conditions were "treacherous" in some areas. The storm also forced airlines to cancel hundreds of flights on the busiest travel day of the Thanksgiving holiday weekend.
The service said in an advisory that travel on Monday morning will be "very unsafe to impossible" and the heavy snow was hard to shovel and may cause falling tree limbs and power outages.
Kansas officials are urging drivers to stay off the roads because of risky conditions across much of the state. Travelers should look out for rain transitioning with little notice into heavy, wet snow on Sunday afternoon.
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Interstate 70 in Kansas and Interstate 80 in Nebraska were closed due to whiteout conditions. The storm beat out the city's previous fifth-largest November snowfall, which was recorded at 6.4 inches from Nov. 26 to 27 in 1940.
"If you need a tow or are injured, call 911", the department said in an alert.
According to ACCU Weather, there have been reports of more than 84,000 power outages across the northern half of Chicago as of midnight on Monday.
The Nebraska State Patrol closed westbound I-80 between Lincoln and Omaha because of the crashes on Sunday morning, which included semitrailer trucks jackknifed across the highway.
At least 1,265 USA flights were canceled and another 5,000 or so were delayed on the final day of the Thanksgiving holiday weekend, considered the busiest travel day of the year, according to the flight-tracking firm FlightAware.
The fast-moving storm system is now tracking to the East expected to hit upstate NY and northern New England on Monday. As the low pressure passes, areas behind the system will continue to see more snow through Monday evening with up to a foot possible before the skies clear.
A majority of those flights involved Chicago's O'Hare International Airport and Eastern seaboard cities that were affected by weather, he added. They say the risky conditions have made it impossible for road crews to be out.