A winter weather advisory is now in effect as snow has begun to fall in the Chicago area and parts of Northwest Indiana.

The advisory will be in effect through 9 a.m. on Sunday for Cook, DuPage, Kane, McHenry, Kendall, Lake, Will, and Grundy counties in Illinois, and Lake County and Porter County, Indiana.  

There's an additional advisory that went into effect at 9 p.m. Saturday and will last until 6 a.m. Sunday, for La Salle and De Kalb Counties in Illinois.

How much snow is expected

As much as 2 to 5 inches of snow is expected, leading to slick roadways and sidewalks by the morning hours. 

The timing of the best snow accumulation will be after midnight on Sunday. Later into the evening, lake effect plumes may take shape, adding additional accumulation.  

According to the National Weather Service, the highest amounts are expected north of I-80. Some areas south of I-80 may also see a wintry mix.  

Highs on Sunday will remain in the upper 20s.