C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX WWUS43 KLOT 201503 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 903 AM CST Tue Jan 20 2026 /O.CON.KLOT.WW.Y.0004.260121T0200Z-260121T1200Z/ Winnebago-Boone-McHenry-Lake IL- Including the cities of Rockford, Woodstock, Crystal Lake, Buffalo Grove, McHenry, Mundelein, Gurnee, Belvidere, Algonquin, and Waukegan 903 AM CST Tue Jan 20 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 6 AM CST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 2 and 5 inches, highest near the Wisconsin-Illinois state line. * WHERE...Boone, Winnebago, Lake IL, and McHenry Counties. * WHEN...From 8 PM this evening to 6 AM CST Wednesday. * IMPACTS...Be prepared for hazardous travel due to snow covered roads. The slippery conditions may also impact part of the Wednesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Illinois can be obtained at www.gettingaroundillinois.com. &&
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