626
FLUS43 KLOT 171845
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO IL
145 PM CDT SAT OCT 17 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-181845-
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-
145 PM CDT SAT OCT 17 2026 /245 PM EDT SAT OCT 17 2026/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS, EAST CENTRAL ILLINOIS, NORTH CENTRAL ILLINOIS,
NORTHEAST ILLINOIS, AND NORTHWEST INDIANA.
DAY ONE
TONIGHT
FROST IS LIKELY TONIGHT, PARTICULARLY EAST OF I-55 AND SOUTH OF
I-80 IN ILLINOIS AS WELL AS ACROSS NORTHWEST INDIANA.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NEEDED.
BEGINNING MONDAY, OCTOBER 19TH, THE HAZARDOUS WEATHER OUTLOOK WILL
NO LONGER BE ISSUED BY THE CHICAGO FORECAST OFFICE AS WE
TRANSITION TO MORE EFFECTIVE METHODS OF COMMUNICATING THIS
INFORMATION.
FOR A DETAILED LOOK AT ALL WEATHER HAZARDS EXPECTED DURING THE
NEXT WEEK, PLEASE SEE OUR GRAPHICAL HAZARDOUS WEATHER OUTLOOK. ON
OUR WEBSITE, WEATHER (DOT) GOV SLASH CHICAGO, THIS IS THE FIRST
LINK UNDER THE "CURRENT HAZARDS" TAB.
FOR A SUMMARY OF OUR KEY WEATHER MESSAGES, INCLUDING STORM MOTIONS
WHEN THUNDERSTORMS ARE EXPECTED, PLEASE SEE THE WEATHER STORY
GRAPHICS AVAILABLE ON OUR WEBSITE AND OUR SOCIAL MEDIA CHANNELS.
LMZ740>745-181845-
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-
145 PM CDT SAT OCT 17 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN.
DAY ONE
TONIGHT
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
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