Snow accumulation is expected throughout the day Wednesday into Wednesday evening in the Chicagoland area. | Graphic via NWS

The National Weather Service said motorists should expect hazardous conditions on Wednesday due to “impactful” snowfall in the Chicagoland area.

A hazardous weather outlook was issued by the National Weather Service (NWS) Tuesday morning for much of northeastern Illinois.

The alert includes Lake and McHenry counties and says snow will move into the area late Tuesday evening.

The snow will continue into Wednesday morning and through the day on Wednesday.

Lake effect snow could persist into Wednesday evening but the greatest travel impacts will occur in the morning, including during the Wednesday morning commute, the NWS said.

Expected snow accumulations through Wednesday afternoon range from an inch or two close to the Illinois-Wisconsin state line to three to five plus inches south of the Kankakee River valley.

McHenry County could see up to two inches, while Lake County could see up to four inches.

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A winter weather advisory has been issued for areas near and south of Interstate 80 for late Tuesday through Wednesday afternoon.

The snow will be on the heavier and wetter side, the NWS said.

The heaviest rates of snowfall could be near an inch an hour east of Interstate 55 and south of Interstate 80.

Snow showers will continue Thursday and Friday with the potential for patchy accumulations and slick travel.

Temperatures in the single digits with sub-zero wind chills are possible early next week, the NWS said.