Dense Fog Advisory
Status
Event Continued ExpiredStart Time
Fri 04/17/2026 02:55 AM EDTEnd Time
Fri 04/17/2026 11:00 AM EDTSignificance
AdvisoryImpacts
Low impact
Locations Affected
Chicago, IL ∙ Aurora, IL ∙ Joliet, IL ∙ Naperville, IL ∙ Elgin, IL ∙ Waukegan, IL ∙ Cicero, IL ∙ Hammond, IN ∙ Bolingbrook, IL ∙ Palatine, ILFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service Chicago IL 155 AM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Illinois, Central Cook, Eastern Will, Lake IL, McHenry, Northern Cook, Northern Will, and Southern Cook Counties. In Indiana, Lake IN and Porter Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Technical Header
ILZ005-006-103>106-108-INZ001-002-171500- /O.CON.KLOT.FG.Y.0010.000000T0000Z-260417T1500Z/ McHenry-Lake IL-Northern Cook-Central Cook-Southern Cook-Northern Will-Eastern Will-Lake IN-Porter- Including the cities of Calumet City, Evanston, Gary, Crete, Oak Park, Chicago, Algonquin, Orland Park, Schaumburg, Palatine, Lemont, Chesterton, La Grange, Woodstock, Crystal Lake, Mokena, Buffalo Grove, McHenry, Hammond, Mundelein, Oak Lawn, Peotone, Merrillville, Park Forest, Valparaiso, Des Plaines, Gurnee, Beecher, Waukegan, Cicero, Joliet, Northbrook, Plainfield, Oak Forest, Portage, and Bolingbrook 155 AM CDT Fri Apr 17 2026
