Light snow began falling in the Chicago area Sunday night, with heavier snowfall forecast overnight into Monday morning.

The National Weather Service said the “intense lake effect” snow will likely start falling before midnight near Lake Michigan and spread inland. Roughly 8 to 10 inches of snow could fall by Monday morning, impacting commuters. A winter storm warning has been issued for Cook County through noon Monday.

The weather service warns it could snow up to 3 inches an hour. “Frequent” thunder and lightning are also forecast. Overall, the weather service predicted 7 to 15 inches of snow for the Chicago area through Tuesday evening.

The Chicago Department of Streets and Sanitation activated more than 250 salt spreaders to combat effects of the storm, focusing on DuSable Lake Shor

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