737
FLUS43 KLOT 240336
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1036 PM CDT MON JUN 23 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-250345-
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-
1036 PM CDT MON JUN 23 2025 /1136 PM EDT MON JUN 23 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.
LIMITED FLOODING RISK.
DISCUSSION...
SHOWERS AND A FEW THUNDERSTORMS WILL PUSH ACROSS PARTS OF THE
REGION TONIGHT, WITH THE GREATEST CHANCES ACROSS NORTHWEST
ILLINOIS. THE MAIN THREATS FROM THE STRONGEST STORMS AND OUTFLOW
WILL BE GUSTY WINDS TO 40 MPH AND BRIEF HEAVY RAINFALL.
DAYS TWO THROUGH SEVEN
TUESDAY THROUGH SUNDAY.
TUESDAY AND WEDNESDAY...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
LIMITED FLOODING RISK.
ELEVATED EXCESSIVE HEAT RISK SOUTH OF I-80.
THURSDAY THROUGH SUNDAY...
LIMITED THUNDERSTORM RISK.
LIMITED EXCESSIVE HEAT RISK.
DISCUSSION...
PERIODIC THUNDERSTORM CHANCES WILL EXIST INTO THE WEEKEND, AS
A NEARLY STATIONARY FRONTAL BOUNDARY LINGERS IN THE VICINITY.
THE STRONGEST STORMS MAY BE CAPABLE OF PRODUCING DAMAGING
WIND GUSTS AND LOCALIZED FLOODING.
WHILE LOWER THAN THE PAST FEW DAYS, AFTERNOON PEAK HEAT INDICES
NEAR 100 TO 105 DEGREES ARE EXPECTED, MAINLY SOUTH OF I-80.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION IS NOT EXPECTED TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST-NORTHEAST AT 20 TO 30 MPH.
LMZ740>745-250345-
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-
1036 PM CDT MON JUN 23 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.
DAYS TWO THROUGH SEVEN
TUESDAY THROUGH SUNDAY.
TUESDAY AND WEDNESDAY...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
THURSDAY THROUGH SUNDAY...
LIMITED THUNDERSTORM RISK.
CARLAW
VISIT US AT WWW.WEATHER.GOV/CHICAGO
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page