817
FLUS43 KLOT 190922
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
422 AM CDT SAT JUL 19 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-200930-
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-
422 AM CDT SAT JUL 19 2025 /522 AM EDT SAT JUL 19 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...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 2 OF 5 DAMAGING WIND RISK...UP TO 60 MPH.
LEVEL 1 OF 5 LARGE HAIL RISK...UP TO QUARTER SIZE.
ELEVATED FLOODING RISK.
DISCUSSION...
THUNDERSTORMS WITH THE POTENTIAL TO PRODUCE DAMAGING WINDS AND
TORRENTIAL RAINFALL ARE EXPECTED TO CROSS THE AREA LATE THIS
MORNING THROUGH MID-AFTERNOON. ADDITIONAL SCATTERED THUNDERSTORMS
AND LOCALLY HEAVY RAIN ARE POSSIBLE LATE TONIGHT, MAINLY SOUTH OF
I-80.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
SUNDAY...
ELEVATED FLOODING RISK WELL SOUTH OF I-80.
LIMITED THUNDERSTORM RISK.
HIGH SWIM RISK LAKE MICHIGAN BEACHES.
MONDAY...
LIMITED THUNDERSTORM RISK WELL SOUTH OF I-80.
TUESDAY...
LIMITED EXCESSIVE HEAT RISK.
WEDNESDAY AND THURSDAY...
ELEVATED EXCESSIVE HEAT RISK.
THURSDAY NIGHT THROUGH FRIDAY...
LIMITED THUNDERSTORM RISK.
DISCUSSION...
THUNDERSTORMS WITH TORRENTIAL RAIN AND LOCALIZED FLASH FLOODING
MAY PERSIST SOUTH OF I-80 ON SUNDAY.
DANGEROUS HEAT AND HUMIDITY ARE POSSIBLE THE MIDDLE OF NEXT WEEK.
SPOTTER INFORMATION STATEMENT
SPOTTERS MAY BE NEEDED LATE THIS MORNING AND AFTERNOON.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST-SOUTHEAST AT 40 MPH.
LMZ740>745-200930-
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-
422 AM CDT SAT JUL 19 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...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 2 OF 5 THUNDERSTORM WIND GUST RISK...UP TO 50 KNOTS.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
SUNDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
LIMITED THUNDERSTORM RISK.
THURSDAY AND FRIDAY...
LIMITED THUNDERSTORM RISK.
KLUBER
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