A potent winter storm is expected to sweep across northern Illinois this weekend, with the National Weather Service warning of heavy snowfall, hazardous travel, and the potential for more than 6 inches of accumulation across much of the region.

The National Weather Service issued a Winter Storm Watch from late Friday night through late Saturday night for nearly all of northern and central Illinois, including the Sauk Valley, DeKalb, McHenry, Kane, DuPage, Kendall, Grundy, La Salle, Kankakee and Livingston areas, as well as Cook and Will counties. Portions of northwest Indiana are also included.

Forecasters say snow will develop after midnight Friday, intensify quickly, and continue through the day Saturday. The heaviest snow is expected Saturday morning through Saturday evening, with sno

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