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FLUS43 KLOT 161150 AAA
HWOLOT
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
650 AM CDT SUN AUG 16 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-171200-
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-
650 AM CDT SUN AUG 16 2026 /750 AM EDT SUN AUG 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 FOG RISK EARLY THIS MORNING.
LIMITED FLOODING RISK EARLY THIS MORNING.
LIMITED THUNDERSTORM RISK.
DISCUSSION...
AREAS OF FOG, SOME LOCALLY DENSE, IS EXPECTED THROUGH MID MORNING
MAINLY WEST AND NORTHWEST OF CHICAGO.
LOCALIZED HEAVY RAINFALL MAY LEAD TO PONDING ON ROADWAYS, MAINLY
SOUTH OF A PONTIAC TO RENSSELAER LINE THROUGH MID MORNING.
ISOLATED TO WIDELY SCATTERED THUNDERSTORMS MAY DEVELOP ALONG A
COLD FRONT THIS AFTERNOON AND EVENING. A FEW STORMS MAY BE
CAPABLE OF GUSTY WINDS, MAINLY SOUTH OF A PONTIAC TO VALPARAISO
LINE.
DAYS TWO THROUGH SEVEN
MONDAY THROUGH SATURDAY.
TUESDAY...
ELEVATED FLOODING RISK.
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
DISCUSSION...
THUNDERSTORM CHANCES RETURN LATE TUESDAY INTO WEDNESDAY, SOME
COULD BE STRONG TO SEVERE AND PRODUCE TORRENTIAL RAINFALL WHICH
MAY LEAD TO FLOODING.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE SOUTHEAST AROUND 30 MPH.
LMZ740>745-171200-
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-
650 AM CDT SUN AUG 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
MONDAY THROUGH SATURDAY.
TUESDAY NIGHT AND WEDNESDAY...
LIMITED THUNDERSTORM RISK.
PETR
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