Hazardous Weather Outlook
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
964 FLUS43 KLOT 210249 AAA HWOLOT Hazardous Weather Outlook...UPDATED National Weather Service Chicago/Romeoville IL 849 PM CST Thu Nov 20 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-220300- Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage- La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford- Northern Cook-Central Cook-Southern Cook-Northern Will- Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- 849 PM CST Thu Nov 20 2025 /949 PM EST Thu Nov 20 2025/ This Hazardous Weather Outlook is for portions of north central Illinois...northeast Illinois and northwest Indiana. .DAY ONE...Tonight. Weather hazards expected... Limited Fog Risk. DISCUSSION... Areas of dense fog are likely overnight south of an approximately Pontiac to Valparaiso line. Visibility as low as a quarter mile is possible in some spots. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be necessary through tonight. $$ LMZ740>745-220300- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 849 PM CST Thu Nov 20 2025 This Hazardous Weather Outlook is for portions of the Illinois nearshore waters of Lake Michigan and the Indiana nearshore waters of Lake Michigan. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Wednesday... Hazardous conditions for small craft are likely. $$ Ratzer Visit us at www.weather.gov/chicago