Chicago

Winter Weather Advisories in Effect Through Sunday

Sunday's forecast will see low temperatures and the possibility of lake effect snow

Snow is on the way, but when will it get here? NBC 5’s Alicia Roman has the answer. 

Ahead of a series of Chicago-area snow systems that could bring some of the largest snowfall totals of the season, a Winter Weather Advisory for Cook County has been issued, starting at midnight and extending until 3 p.m. Sunday afternoon. 

The systems are expected to move in over the next several days, bringing the potential for several inches of accumulation. Through the overnight hours on Saturday and into Sunday, forecasters are expecting between two to four inches of snow to fall across Cook County and into northwest Indiana. 

A Winter Weather Advisory will begin at 9 p.m. Saturday night in McHenry and Lake counties in Illinois, and will last until noon Central time on Sunday afternoon. Lake County and Porter County in Indiana will be under a Winter Weather Advisory beginning at midnight Saturday night and ending at 6 p.m. Sunday. 

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Temperature highs are expected to top out in the upper-20s Sunday as a cold front approaches with more light snow coupled with lake-effect snow showers into the evening.

At the end of the two days, totals will likely be between 1 and 3 inches inland and 2 and 4 inches along the lakefront.

Light snow is expected to develop Friday evening.
The snow likely won't result in much accumulation but could bring a dusting to areas mainly along the Illinois-Wisconsin border.
Spotty showers begin Saturday afternoon, though with temps warming up, this is likely to develop as a rain-snow mix.
That rain-snow mix is expected to develop into more moderate snow during the overnight hours and into Sunday morning.
By early Sunday morning, snow will cover much of the Chicago area. There is a chance for some lake effect showers and winds turn off the lake Sunday morning, which could bring additional accumulation along the lakefront.
The system is expected to move out by Sunday evening, heading into northwest Indiana.
At the end of the two-day system, totals could range anywhere from 2-5 inches in the Chicago area, according to the global forecast models.
European models predict fewer totals by Sunday evening, though some spots could still see up to 5 inches, particularly in far northern counties.
The snow is expected to return Monday evening and continue into Tuesday morning. Another system will bring some accumulation by Tuesday evening as well.

Monday is expected to be partly sunny and again could see the chance for light snow during the afternoon and evening hours, as well as during the day Tuesday, with even more accumulations possible. 

It remains unclear exactly how much snow these waves will dump on the Chicago area, but NBC 5 Storm Team meteorologists advise watching forecasts throughout the weekend and next week as conditions develop. 

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