894
FLUS43 KLOT 252007
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
307 PM CDT FRI JUL 25 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-262015-
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-
307 PM CDT FRI JUL 25 2025 /407 PM EDT FRI JUL 25 2025/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
DAY ONE
TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 DAMAGING WIND RISK...UP TO 60 MPH.
ELEVATED FLOODING RISK.
DISCUSSION...
ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE THIS AFTERNOON.
BRIEF TORRENTIAL RAINFALL MAY LEAD TO A CONTINUED THREAT FOR
ISOLATED INSTANCES OF FLASH FLOODING.
ADDITIONAL HEAVY RAIN PRODUCING STORMS ARE POSSIBLE THIS EVENING
AND OVERNIGHT, WITH AN ADDITIONAL FLASH FLOOD POTENTIAL INTO
EARLY SATURDAY MORNING. INITIALLY, THE MAIN THREAT AREA WILL BE
WEST OF THE FOX VALLEY, BUT MAY EXPAND TO INCLUDE MOST OF THE
REGION TONIGHT.
THE STRONGEST STORMS THIS AFTERNOON AND TONIGHT WILL BE CAPABLE
OF PRODUCING STRONG AND GUSTY WINDS.
DAYS TWO THROUGH SEVEN
SATURDAY THROUGH THURSDAY.
SATURDAY...
LIMITED FLOODING RISK.
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
SUNDAY...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
LIMITED EXCESSIVE HEAT RISK.
MONDAY...
ELEVATED EXCESSIVE HEAT RISK.
TUESDAY...
LIMITED THUNDERSTORM RISK.
LIMITED FLOODING RISK.
ELEVATED EXCESSIVE HEAT RISK.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
DISCUSSION...
LINGERING THUNDERSTORMS SATURDAY WILL BRING THE CHANCE FOR
TORRENTIAL RAINFALL AND LOCALIZED FLOODING, PARTICULARLY DURING
THE MORNING, MAINLY NORTH OF I-80. THERE IS A THREAT FOR A FEW
STRONG TO SEVERE STORMS IN THE AFTERNOON, MAINLY SOUTH OF I-80.
HEAT AND HUMIDITY MAY ONCE AGAIN BUILD TO DANGEROUS LEVELS AT
TIMES SUNDAY THROUGH TUESDAY. THE HOTTEST CONDITIONS LOOK TO OCCUR
ON MONDAY.
SPOTTER INFORMATION STATEMENT
GIVEN THE LIMITED NATURE OF ANY SEVERE THREAT, SPOTTER ACTIVATION
IS NOT EXPECTED, BUT REPORTS OF FLOODING OR SEVERE WEATHER ARE
APPRECIATED.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST TO NORTHEAST AT 15 MPH THIS AFTERNOON,
THEN 20 TO 25 MPH TONIGHT.
LMZ740>745-262015-
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-
307 PM CDT FRI JUL 25 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
TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 THUNDERSTORM WIND GUST RISK...UP TO 40 KNOTS.
DAYS TWO THROUGH SEVEN
SATURDAY THROUGH THURSDAY.
SATURDAY...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
SUNDAY...
LIMITED THUNDERSTORM RISK.
TUESDAY AND WEDNESDAY...
LIMITED THUNDERSTORM RISK.
CARLAW
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