Vehicles travel along Route 14 during a snow storm Nov. 11 in Cary.
Vehicles travel along Route 14 during a snow storm Nov. 11 in Cary.

Just when you think the warm, sunny weather is here to last, the National Weather Service reports it expects 6 inches of snow this week.

That snow is part of a storm system expected over the next few days, with temperatures in the upper 30s Monday dropping to the upper 20s by Wednesday.

DeKalb, McHenry and Kane counties are under a winter storm watch in effect from 9 a.m. Tuesday through noon Wednesday.

Monday is expected to begin with some rain possibly mixing with snow toward the evening. Accumulation of 1-2 inches of snow is possible Monday night. Periods of snow will develop Monday evening all the way through Wednesday.

“It’s gonna be kind of a long duration event. It won’t be snowing hard the entire time, but there will be periods where it could be snowing at a pretty good clip,” meteorologist Kevin Birk said.

The snow could be heavy at times on Tuesday, accumulating up to 6 inches of snow. Tuesday’s snowstorm also could see breezy winds with gusts as high as 25-30 mph. The strong winds could lead to blowing and drifting snow Tuesday night into Wednesday morning, according to the NWS. Snow will be likely before noon Wednesday.

A storm system, an area of low pressure, Birk said, will be moving up across the Ohio Valley which will drag colder air into the area. This type of system features a band of precipitation, which in this case will be in the form of snow, he said.

“I would say it is not unusual. You just have not had a lot of snow systems this year. Most of them have gone toward the north, so we’ve just got a [fewer] snow events,” Birk said.

The NWS warns travel could be very difficult. The hazardous conditions could impact particularly the Tuesday afternoon and Wednesday morning commutes, Birk said.

While the forecast could change, Birk said, there is “decent potential” for the storm. 

McHenry County