568
FLUS43 KLOT 160244
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
944 PM CDT SAT AUG 15 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-170245-
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-
944 PM CDT SAT AUG 15 2026 /1044 PM EDT SAT AUG 15 2026/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
DAY ONE
TONIGHT.
WEATHER HAZARDS EXPECTED...
ELEVATED FLOODING RISK, MAINLY SOUTH OF INTERSTATE 80.
LIMITED THUNDERSTORM RISK.
DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS WILL MOVE THROUGH TONIGHT AND
WILL BE CAPABLE OF TORRENTIAL RAINFALL. IF STORMS BECOME SLOW
MOVING OR RESIDE OVER AREAS THAT SAW HEAVY RAIN THE PAST FEW DAYS,
SIGNIFICANT FLOODING COULD OCCUR. LOCALLY GUSTY WINDS CANNOT BE
RULED OUT WITH ANY STORMS TONIGHT.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
SUNDAY...
LIMITED FLOODING RISK.
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
TUESDAY NIGHT...
ELEVATED FLOODING RISK.
LIMITED THUNDERSTORM RISK.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
HIGH SWIM RISK LAKE MICHIGAN BEACHES.
DISCUSSION...
ADDITIONAL STORM CHANCES ARE EXPECTED LATE TUESDAY INTO
WEDNESDAY.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST AT 40 TO 45 MPH.
LMZ740>745-170245-
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-
944 PM CDT SAT AUG 15 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...
LIMITED THUNDERSTORM RISK.
TUESDAY NIGHT...
LIMITED THUNDERSTORM RISK.
WEDNESDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
LIMITED THUNDERSTORM RISK.
THURSDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
YACK
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