943
FLUS43 KLOT 160855
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
355 AM CDT WED SEP 16 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-170900-
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-
355 AM CDT WED SEP 16 2026 /455 AM EDT WED SEP 16 2026/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
DAY ONE
TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK.
ELEVATED FLOODING RISK TONIGHT.
DISCUSSION...
A FEW ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY SOUTH OF I-80.
HOWEVER, THERE IS A BETTER CHANCE FOR ANOTHER WAVE OF THUNDERSTORMS
LATER TONIGHT INTO EARLY THURSDAY MORNING. VERY HEAVY RAINFALL
WILL LIKELY ACCOMPANY THESE STORMS, AND THE POTENTIAL FOR REPEATED
THUNDERSTORMS MOVING OVER THE SAME AREAS MAY LEAD TO LOCALIZED
FLOODING, PARTICULARLY TO THE SOUTH OF I-80.
DAYS TWO THROUGH SEVEN
THURSDAY THROUGH TUESDAY.
THURSDAY MORNING...
LIMITED THUNDERSTORM RISK.
LIMITED FLOODING RISK.
FRIDAY NIGHT THROUGH SUNDAY...
LIMITED THUNDERSTORM RISK.
LIMITED TO ELEVATED FLOODING RISK.
HIGH SWIM RISK LAKE MICHIGAN BEACHES.
MONDAY...
LIMITED THUNDERSTORM RISK.
DISCUSSION...
ADDITIONAL EPISODES OF SHOWERS AND STORMS ARE EXPECTED IN THE
GENERAL AREA THIS WEEKEND. REPEATED DOWNPOURS MAY LEAD TO
LOCALIZED FLOODING.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST SOUTHEAST AROUND 35 MPH
LMZ740>745-170900-
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-
355 AM CDT WED SEP 16 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
TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK.
DAYS TWO THROUGH SEVEN
THURSDAY THROUGH TUESDAY.
THURSDAY...
LIMITED THUNDERSTORM RISK.
FRIDAY THROUGH MONDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
LIMITED THUNDERSTORM RISK.
TUESDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
KJB
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