537
FLUS43 KLOT 241702
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1202 PM CDT THU JUL 24 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-251715-
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-
1202 PM CDT THU JUL 24 2025 /102 PM EDT THU JUL 24 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...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 2 OF 5 DAMAGING WIND RISK...UP TO 65 MPH.
ELEVATED FLOODING RISK.
ELEVATED EXCESSIVE HEAT RISK THIS AFTERNOON.
DISCUSSION...
HOT AND HUMID CONDITIONS ARE EXPECTED THIS AFTERNOON WITH PEAK
HEAT INDICES OF 100 TO 110 DEGREES. THE HEAT AND HUMIDITY COULD
HELP FUEL STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON INTO THIS
EVENING, MAINLY SOUTHEAST OF A WAUKEGAN TO PERU LINE, INCLUDING
NORTHWEST INDIANA. THE PRIMARY SEVERE RISK WILL BE LOCALLY
DAMAGING WINDS TO 65 MPH.
IN ADDITION, STORMS THROUGH TONIGHT WILL BE CAPABLE OF PRODUCING
TORRENTIAL RAINFALL WHICH COULD RESULT IN LOCALIZED FLASH
FLOODING.
DAYS TWO THROUGH SEVEN
FRIDAY THROUGH WEDNESDAY.
FRIDAY...
LIMITED THUNDERSTORM RISK.
LIMITED FLOODING RISK.
SATURDAY...
ELEVATED FLOODING RISK.
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
SUNDAY...
LIMITED EXCESSIVE HEAT RISK.
MONDAY...
ELEVATED EXCESSIVE HEAT RISK.
TUESDAY...
LIMITED EXCESSIVE HEAT RISK.
DISCUSSION...
PERIODIC THUNDERSTORMS FRIDAY THROUGH SATURDAY WILL BRING THE
CHANCE FOR TORRENTIAL RAINFALL AND LOCALIZED FLOODING.
SPOTTER INFORMATION STATEMENT
SPOTTERS MAY BE NEEDED THIS AFTERNOON AND EVENING.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST AT 30 TO 35 MPH.
LMZ740>745-251715-
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-
1202 PM CDT THU JUL 24 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...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 2 OF 5 THUNDERSTORM WIND GUST RISK...UP TO 55 KNOTS.
DAYS TWO THROUGH SEVEN
FRIDAY THROUGH WEDNESDAY.
FRIDAY...
LIMITED THUNDERSTORM RISK.
SATURDAY...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
- IZZI
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