C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX WWUS43 KLOT 210359 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 959 PM CST Tue Jan 20 2026 /O.CON.KLOT.WW.Y.0004.000000T0000Z-260121T1400Z/ Winnebago-Boone-McHenry-Lake IL- Including the cities of Mundelein, Waukegan, Algonquin, Belvidere, Gurnee, Buffalo Grove, Rockford, McHenry, Woodstock, and Crystal Lake 959 PM CST Tue Jan 20 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST WEDNESDAY... * WHAT...Snow and hazardous travel conditions expected. Total snow accumulations between 2 and 5 inches. * WHERE...Boone, Winnebago, Lake IL, and McHenry Counties. * WHEN...Until 8 AM CST Wednesday. * IMPACTS...Plan on snow covered, slick road conditions, and periods of low visibility. The hazardous conditions will likely impact the Wednesday morning commute, especially in the northern Chicago metro area. * ADDITIONAL DETAILS...A heavier snow band is expected to develop late this evening into the overnight. If a long enough period of heavier snowfall rates occurs, localized snowfall amounts may reach upwards of 5 inches. 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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