047
FLUS43 KLOT 251638
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1138 AM CDT FRI JUL 25 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-261645-
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-
1138 AM CDT FRI JUL 25 2025 /1238 PM EDT FRI JUL 25 2025/
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...WITH AN ASSOCIATED:
LEVEL 1 OF 5 DAMAGING WIND RISK...UP TO 60 MPH.
ELEVATED FLOODING RISK.
DISCUSSION...
SCATTERED TO NUMEROUS SHOWERS AND EMBEDDED THUNDERSTORMS WILL
OCCUR TODAY. THE GREATEST COVERAGE WILL BE NEAR AND NORTH OF I-80.
TORRENTIAL RAINFALL AND VERY SLOW STORM MOTIONS WILL LEAD TO A
THREAT FOR LOCALIZED FLASH FLOODING.
ADDITIONAL HEAVY RAIN PRODUCING STORMS ARE POSSIBLE THIS EVENING
AND OVERNIGHT, WITH AN ADDITIONAL FLASH FLOOD POTENTIAL INTO EARLY
SATURDAY MORNING.
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.
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
SUNDAY...
ELEVATED EXCESSIVE HEAT RISK.
MONDAY...
ELEVATED EXCESSIVE HEAT RISK.
TUESDAY...
LIMITED THUNDERSTORM RISK.
ELEVATED EXCESSIVE HEAT RISK.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
DISCUSSION...
LINGERING THUNDERSTORMS SATURDAY WILL BRING THE
CHANCE FOR TORRENTIAL RAINFALL AND LOCALIZED FLOODING,
PARTICULARLY SATURDAY MORNING.
HEAT AND HUMIDITY MAY ONCE AGAIN BUILD TO DANGEROUS LEVELS AT
TIMES SUNDAY THROUGH TUESDAY.
SPOTTER INFORMATION STATEMENT
SPOTTERS MAY BE NEEDED LATE TODAY OR TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE NORTHEAST AROUND 10 MPH.
LMZ740>745-261645-
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-
1138 AM 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
TODAY AND 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...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
CARLAW
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