A winter storm warning has been issued for Lake and McHenry counties, with heavy wet snow falling at the rate of one to two inches an hour in some northern suburbs.
Some areas, such as Gurneee, had 7 inches by 6 p.m. Those areas are expected to get 6 to 8 inches of snow by the time the storm moves out overnight, according to National Weather Service.
Chicago Weather Center meteorologists predict 2 to 4 inches for some areas. High amounts of accumulation could possibly build up over northeast Illinois later Thursday evening.
As of 4:30 p.m. the Chicago put out 199 of its snow and salt trucks and expected to patrol main streets throughout the evening rush.
The Illinois Tollway also has mobilized its full fleet of 182 snowplows during rush hour and throughout the evening across the 286-mile system, according to a release.
For the latest updates, go to ChicagoWeatherCenter.com