008
FLUS43 KLOT 191914
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
214 PM CDT SAT SEP 19 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-201915-
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-
214 PM CDT SAT SEP 19 2026 /314 PM EDT SAT SEP 19 2026/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
DAY ONE
TONIGHT.
WEATHER HAZARDS EXPECTED...
ELEVATED THUNDERSTORM RISK.
SIGNIFICANT FLOODING RISK.
DISCUSSION...
SHOWERS AND THUNDERSTORMS WILL EXPAND IN COVERAGE THIS EVENING AND
OVERNIGHT, PARTICULARLY FOR AREAS NEAR AND NORTH OF I-80.
TORRENTIAL RAINFALL MAY LEAD TO INSTANCES OF FLASH FLOODING.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
SUNDAY...
ELEVATED FLOODING RISK, MAINLY IN THE MORNING.
LIMITED THUNDERSTORM RISK.
HIGH SWIM RISK LAKE MICHIGAN BEACHES.
MONDAY AND TUESDAY...
LIMITED THUNDERSTORM RISK.
HIGH SWIM RISK LAKE MICHIGAN BEACHES.
WEDNESDAY...
HIGH SWIM RISK LAKE MICHIGAN BEACHES.
DISCUSSION...
PERIODS OF HEAVY RAIN AND SCATTERED THUNDERSTORMS WILL BE
POSSIBLE, MAINLY ON SUNDAY MORNING WITH A CONTINUED FLOOD THREAT.
RIVER RISES ARE LIKELY, PARTICULARLY ON PARTS OF THE ROCK, FOX,
DUPAGE, DES PLAINES, AND ILLINOIS RIVERS INTO NEXT WEEK.
PERSISTENT NORTHEAST WINDS WILL MAINTAIN HIGH WAVES AND
DANGEROUS SWIMMING CONDITIONS AT LAKE MICHIGAN BEACHES IN
NORTHEAST ILLINOIS AND NORTHWEST INDIANA THROUGH THE MIDDLE OF
NEXT WEEK.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST AROUND 30 MPH.
LMZ740>745-201915-
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-
214 PM CDT SAT SEP 19 2026
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.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
SUNDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
LIMITED THUNDERSTORM RISK.
MONDAY THROUGH THURSDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
CARLAW
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