C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX WWUS73 KLOT 212242 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 442 PM CST Wed Jan 21 2026 /O.CON.KLOT.EC.A.0001.260123T0900Z-260123T1800Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage- Kendall-Northern Cook-Central Cook-Southern Cook-Northern Will- Southern Will-Eastern Will- Including the cities of Wheaton, Calumet City, Orland Park, Peotone, Oak Forest, Buffalo Grove, Woodstock, Des Plaines, Lemont, Channahon, Oak Lawn, Rockford, Byron, Belvidere, Schaumburg, Gurnee, Aurora, Yorkville, Oak Park, McHenry, Mokena, Crystal Lake, Northbrook, Oswego, Beecher, DeKalb, Cicero, Sycamore, Naperville, Mundelein, Carol Stream, Palatine, Joliet, Algonquin, Oregon, Waukegan, Plainfield, Bolingbrook, Elgin, Dixon, Park Forest, Crete, Downers Grove, Lombard, Manhattan, Rochelle, Evanston, Chicago, Plano, La Grange, and Wilmington 442 PM CST Wed Jan 21 2026 ...EXTREME COLD WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY MORNING... * WHAT...Dangerously cold wind chills as low as 35 below possible. * WHERE...Portions of north central and northeast Illinois. * WHEN...From late Thursday night through Friday morning. * IMPACTS...The dangerously cold wind chills as low as 35 below zero could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Dress in layers including a hat, face mask, and gloves if you must go outside. To prevent water pipes from freezing; wrap or drain or allow them to drip slowly. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside. &&
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