A major snowstorm is making its way across the Midwest, set to shift into the Northeast by Sunday night.
This storm is causing disruptions to travel with some areas forecast to pick up over a foot of snow.
"Through early this morning, the heaviest snow will fall along the I-80 corridor from Omaha to Chicago with rates of 1 inch per hour. Travel will be treacherous as roads will be snowpacked and slippery," AccuWeather.com Meteorologist Mike Doll said.
Power outages can also occur as the storm shifts eastward through Sunday.
UPDATES (All times are listed in Eastern Time):
11:21 a.m. EST Sunday: A foot of snow has been measured near Fulton, IL by an NWS spotter with snow still falling.
10:56 a.m. EST Sunday: Many roads across Iowa are completely covered with snow, leading to difficult travel, according to Iowa DOT.
10:21 a.m. EST Sunday: Amid the winter weather, more than 1,000 flights arriving to and departing from Chicago O'Hare International Airport canceled Sunday.
9:40 a.m. EST Sunday: Roads are covered with snow along I-80 in eastern Iowa.
9:00 a.m. EST Sunday:
Updated map. Hazardous travel conditions throughout much of IL. #ilwx pic.twitter.com/UYptXovNj7— IDOT (@IDOT_Illinois) Feb. 1, 2015
8:36 a.m. EST Sunday: 9.5 inches of snow has fallen near Sterling, Illinois, with snow still falling, according to NWS spotter.
7:59 a.m. EST Sunday: A blizzard warning goes into effect for the Chicago area at 2 p.m. CST this afternoon. The city is forecast to receive around a foot of snow by the end of the storm.
7:04 a.m. EST Sunday: 5.3 inches of snow have already fallen so far in Peotone, Illinois, located just south of Chicago, according to NWS spotter.
5:40 a.m. EST Sunday: 7 inches of snow have fallen 9 miles north of Brookfield, Missouri, NWS spotter reported.
5:27 a.m. EST Sunday: More than 2,100 Missouri power customers are without service at this time, utilities reported.
5:14 a.m. EST Sunday: Light snow beginning in Pittsburgh. PennDOT reports icy spots on some area highways.
As the snowstorm pushes eastward, all timestamps after this point will transition to EST.
3:57 a.m. CST Sunday: Vehicle crashes beginning in western Pennsylvania.
Multi vehicle accident on I-376 westbound between Exit 78B - PA 8 North/Wilkinsburg and Exit 77 - Edgewood/Swissvale. All lanes closed.— 511PA Pittsburgh (@511PAPittsburgh) Feb. 1, 2015
3:35 a.m. CST Sunday: Icy spots beginning to develop on interstates 79 and 376 near new Castle, Pennsylvania, 511PA reported.
3:05 a.m. CST Sunday: 6 inches of snow have fallen at Kirksville, Missouri, MODOT reports.
3:01 a.m. CST Sunday: Over 1,700 customers are without power in the Des Moines, Iowa, area, MidAmerican Energy reports.
2:45 a.m. CST Sunday: 4.5 inches of snow each in Osage and Charles City, Iowa, law enforcement reports.
2:14 a.m. CST Sunday: More than 4,000 Indiana Michigan Power customers in Indiana, mostly in the South Bend area, are without service, the utility said.
2:02 a.m. CST Sunday: 5 inches of snow have fallen at Brookfield, Missouri, an NWS spotter reported.
1:58 a.m. CST Sunday: Snowy conditions overspread most of Ohio, ODOT reports.
1:38 a.m. CST Sunday: Illinois transportation officials prepare for Monday commute.
Kennedy Expressway express lanes will remain inbound Sunday & through Monday a.m. due to safety/snow removal in advance of Monday a.m. rush.— IDOT (@IDOT_Illinois) Feb. 1, 2015
1:36 a.m. CST Sunday: Main area of snow now affecting 14 states.
1:25 a.m. CST Sunday: Snowing at Grant Park, Chicago, ABC7Chicago live cam shows.
1:01 a.m. CST Sunday: Snowy travel on interstates 80, 39 and 74 in Illinois.
I-80 W of I-355 / I-39 at MM 57 / I-74 at 12th Ave. #snow #ilwx pic.twitter.com/p4Wo8qG0Rh— IDOT (@IDOT_Illinois) Feb. 1, 2015
12:45 a.m. CST Sunday: Hastings, Nebraska, set a Jan. 31 record for liquid precipitation with 0.70 of an inch; the old record was 0.65 of an inch, which was set in 1908.
12:35 a.m. CST Sunday: Henniker, New Hampshire, lost its snow plow fleet in a Friday night fire at its highway department, The Associated Press reported. Four to eight inches of snow are expected into Monday.
12:25 a.m. CST Sunday: 5.2 inches of snow have fallen at Des Moines, Iowa, the NWS said.
12:09 a.m. CST Sunday: Traffic crashes occurring in Indiana.
I-80/94 MM 8.9 EB at Grant St / mile 9 Right 2 lanes closed <= 30 mins due to a crash— INDOT TrafficWise (@TrafficWise) Feb. 1, 2015
11:44 p.m. CST Saturday: More than 875 flights have been canceled for Sunday at O'Hare airport, FlightStats reports.
11:15 p.m. CST Saturday: Kansas travel conditions as of 11 p.m. Saturday, according to KDOT.
#KSWX 11 P.M. UPDATE Slushy - partly - completely snowpacked rd conditions. Brown-slushy; Blue-partly; Pink-completely pic.twitter.com/3SwW44BtKv— KCMetroKDOT (@KansasCityKDOT) Feb. 1, 2015
11:12 p.m. CST Saturday: Travel is deteriorating across northern Illinois.
Updated road conditions map. Red = Snow/ice covered http://t.co/hm6D3X08fc #ilwx pic.twitter.com/qTYm1yUbyn— IDOT (@IDOT_Illinois) Feb. 1, 2015
11:00 p.m. CST Saturday: Heavy snow in Merrillville, Indiana, just south of Chicago.
10:44 p.m. CST Saturday: 4 inches of snow have fallen 1 mile south of Ames, Iowa, NWS spotter reports.
10:41 p.m. CST Saturday: Slippery travel possible around the Milwaukee area, 511WI reports.
10:35 p.m. CST Saturday: Wet to snowy roads occurring in western Ohio, ODOT reports.
10:24 p.m. CST Saturday: "Snow will fall at rates of 1 inch an hour through the overnight from Des Moines to Chicago," AccuWeather.com Meteorologist Mike Doll said.
10:15 p.m. CST Saturday: Snowy travel in northeast Kansas, 511KS reports.
10:05 p.m. CST Saturday: Illinois DOT advises travelers to use caution overnight.
Road conditions expected to deteriorate overnight. Be very careful if you have to drive. http://t.co/hm6D3X08fc #ilwx pic.twitter.com/C3S8aOT2j4— IDOT (@IDOT_Illinois) Feb. 1, 2015
10:00 p.m. CST Saturday: Travel ban for some commercial vehicles will take effect on the Ohio Turnpike from 8:00 a.m. Feb. 1, until 12:00 p.m. Feb. 2, 2015 due to winter storm.
9:35 p.m. CST Saturday: Snowy, icy conditions occurring in northern and central Indiana, INDOT reports.
9:27 p.m. CST Saturday: Dangerous snow conditions cause Iowa officials to begin issuing towing bans.
Tow ban(s) in effect in SW/Central Iowa. For current status see Full-Featured version http://t.co/o5hgSsWNUs @ 8:58 pm (01/31)— Iowa DOT (@iowadot) Feb. 1, 2015
9:23 p.m. CST Saturday: Main shield of snow covers parts of nine Midwestern states.
9:20 p.m. CST Saturday: Travelers will encounter snowy conditions on most Nebraska highways, Nebraska 511 reports.
9:15 p.m. CST Saturday: Snowy travel along I-29 in St. Joseph, Missouri, MoDOT webcam shows.
9:11 p.m. CST Saturday: Snow and ice covers all roads in Iowa except for the extreme southeastern part of the state, Iowa Department of Transportation reports.
9:03 p.m. CST Saturday: Snowy and icy conditions are developing in northwest Illinois, Illinois Department of Transportation reports.
8:29 p.m. CST Saturday: Nearly 800 flight cancellations for Chicago O'Hare International Airport on Sunday, FlightStats reports. Light snow is falling at O'Hare at this time.
8:08 p.m. CST Saturday:
We will have more than 1,700 trucks & 3,700 employees statewide working to clear snow & ice from roads during the winter storm. #ilwx— IDOT (@IDOT_Illinois) Feb. 1, 2015
7:11 p.m. CST Saturday:
Roadways becoming slick in NW & N-central MO. Use caution if you have to be out & about tonight. pic.twitter.com/mXVihY7HKz— NWS Kansas City (@NWSKansasCity) Feb. 1, 2015
6:47 p.m. CST Saturday: "Motorists should be alert for slick roadways, take extra precautions when driving and consider traveling only if it is necessary," the Illinois Department of Transportation said in a news release.
6 p.m. CST Saturday: Airlines have begun to issue travel waivers for Chicago O'Hare International Airport and Chicago Midway International Airport.
To those that have travel plans through ORD, or MDW tomorrow, please check with the carrier! Waivers have been issued.— AirlineGeeks.com (@AirlineGeeks) Jan. 31, 2015