More snow is expected in the Chicagoland area during the Monday rush hour commute following a snowstorm over the post-Thanksgiving weekend that dumped a foot of snow in Lake and McHenry counties.
The National Weather Service (NWS) issued a winter weather advisory early Monday morning for McHenry, Lake, Cook, Will, Ogle, Lee, DeKalb, Kane, DuPage, Winnebago, Boone, LaSalle, Kendall, Grundy, Kankakee, Livingston, Iroquois and Ford counties.
Accumulating snow will overspread the area from west to east on Monday afternoon. It will persist through the evening before ending after midnight.
The snow will impact the afternoon and evening rush hour commute with hazardous travel conditions, the NWS said.
Snowfall amounts are expected to range from two to three inches north of a Dixon-to-Chicago line and two to four inches to the south, with locally higher amounts possible south of Interstate 80.
The NWS said snow could begin by 2 p.m. Monday and motorists should plan on slippery road conditions.
The accumulating snowfall on Monday comes just a day after a large snowstorm ended in the northern Illinois area.
The winter storm brought widespread significant snowfall to a sizable portion of the Midwest just after Thanksgiving, beginning on Saturday and ending Sunday.
The heaviest snow occurred between about 12 p.m. and midnight Saturday, the NWS said.
The long duration of the snowfall allowed for widespread snow accumulations between 6 and 11 inches to be observed across northern Illinois and northwest Indiana, with a few isolated accumulations of around a foot observed near the Illinois-Wisconsin state line.
In Lake County, the highest snowfall was recorded northwest of Lake Forest at 12 inches, Winthrop Harbor at 12 inches, Antioch at 11.7 inches, Long Lake at 11.5 inches, Barrington with 11.1 inches, Lake Bluff at 11 inches and Wadsworth at 11 inches.
In McHenry County, the highest snowfall was recorded northwest of Cary at 11 inches, west-northwest of Bull Valley at 10.9 inches, south of McCullom Lake at 10.8 inches, east-northeast of McHenry at 10.2 inches, south-southwest of Union at 10.1 inches and 10 inches in Marengo.
The rest of Lake County and McHenry County also saw substantial snowfall totals with amounts of 9 inches or more.
The NWS said it is rare for snowfall amounts as high as these to occur in the Chicagoland area as early as November.
The winter storm ended up breaking multiple snowfall records in the month of November.
It caused significant travel impacts on a busy post-Thanksgiving travel day, with numerous vehicle crashes occurring and hundreds of flights getting delayed or canceled across the region.