115
FLUS43 KLOT 101729
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1229 PM CDT SUN AUG 10 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-111730-
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-
1229 PM CDT SUN AUG 10 2025 /129 PM EDT SUN AUG 10 2025/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
DAY ONE
THIS AFTERNOON AND TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 DAMAGING WIND RISK...UP TO 50 TO 60.
ELEVATED FLOODING RISK.
DISCUSSION...
ISOLATED TO WIDELY SCATTERED THUNDERSTORMS THIS AFTERNOON NEAR AND
WEST OF THE I-55 CORRIDOR WILL BE CAPABLE OF PRODUCING LOCALIZED
STRONG TO DAMAGING WIND GUSTS. IN ADDITION, TORRENTIAL DOWNPOURS
MAY RESULT IN LOCALIZED FLOODING.
ADDITIONAL THUNDERSTORMS TONIGHT ACROSS PORTIONS OF NORTHERN
ILLINOIS MAY BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL AND
FLOODING.
DAYS TWO THROUGH SEVEN
MONDAY THROUGH SATURDAY.
MONDAY AND TUESDAY...
LIMITED TO ELEVATED FLOODING RISK.
LIMITED THUNDERSTORM RISK.
WEDNESDAY...
LIMITED THUNDERSTORM RISK MAINLY SOUTH OF I-80.
DISCUSSION...
PERIODIC CHANCES FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE INTO
WEDNESDAY. THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING
TORRENTIAL DOWNPOURS WITH SOME CONTINUED THREAT FOR LOCALIZED
FLOODING.
SPOTTER INFORMATION STATEMENT
DUE TO THE LIMITED NATURE OF ANY SEVERE THREAT TODAY, SPOTTER
ACTIVATION IS NOT EXPECTED AT THIS TIME.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE NORTHEAST AT ABOUT 20 MPH.
LMZ740>745-111730-
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-
1229 PM CDT SUN AUG 10 2025
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
THIS AFTERNOON AND TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 THUNDERSTORM WIND GUST RISK...UP TO 40 KTS.
DAYS TWO THROUGH SEVEN
MONDAY THROUGH SATURDAY.
MONDAY AND TUESDAY...
LIMITED THUNDERSTORM RISK.
CASTRO
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