The National Weather Service is warning that a few different snow events could bring more than 6 inches of snow to parts of the Chicago suburbs during the first half of the week when thousands of people will be traveling for Christmas.
According to an advisory issued on Sunday night, there is potential for three periods of accumulating snow over the next few days.
The first event is predicted for during the day on Monday and will effect Northeast and Northern Illinois, both along and north of I-88 and the Eisenhower Expressway, with up to a half inch of snow expected, according to the advisory.
On Christmas Day areas in Chicago, along the North Shore and in Lake County could get up to three inches of snow.
Later Tuesday evening and into Wednesday the service is predicting several more inches for the same area, as well as Southeast of I-55.
The snow expected late Tuesday and into Wednesday will also transition into lake effect snow, bringing several more inches for Northwest Indiana Wednesday night.
In addition to snow, increasing winds will cause blowing and drifting snow, especially on Tuesday night and into Wednesday.
"Holiday and post-holiday travelers are advised to monitor later forecasts for updates and possible warnings and advisories," the National Weather Service wrote in a special weather alert.
Affected counties include DuPage, Kane, Kendall, Lake, Cook, McHenry and Will.