012  
FLUS43 KLOT 141800  
HWOLOT  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
100 PM CDT WED MAY 14 2025  
 
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-  
010-011-019-151800-  
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-  
100 PM CDT WED MAY 14 2025 /200 PM EDT WED MAY 14 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...  
 
LIMITED THUNDERSTORM RISK  
ELEVATED FOG RISK NEAR LAKE MICHIGAN TONIGHT.  
 
DISCUSSION...  
 
ISOLATED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EARLY  
EVENING, MAINLY INLAND OF LAKE MICHIGAN. SEVERE WEATHER IS NOT  
EXPECTED WITH THIS ACTIVITY. ADDITIONAL ISOLATED NON SEVERE  
THUNDERSTORMS ARE POSSIBLE LATE TONIGHT.  
 
AREAS OF DENSE FOG WILL REMAIN ALONG THE LAKE MICHIGAN LAKE SHORE  
THIS AFTERNOON. THIS DENSE FOG MAY SHIFT INLAND INTO PARTS OF  
NORTHEASTERN IL AFTER SUNSET THIS EVENING AND CONTINUE TONIGHT.  
   
DAYS TWO THROUGH SEVEN
 
THURSDAY THROUGH TUESDAY.  
 
THURSDAY...  
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:  
LEVEL 2 TO 3 OF 5 SEVERE THUNDERSTORM RISK.  
ELEVATED FIRE WEATHER RISK.  
FRIDAY...  
SIGNIFICANT FIRE WEATHER RISK.  
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:  
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.  
TUESDAY...  
LIMITED THUNDERSTORM RISK.  
 
DISCUSSION...  
 
ISOLATED TO SCATTERED THUNDERSTORMS MAY DEVELOP AHEAD OF A COLD  
FRONT LATE THURSDAY AFTERNOON AND SHIFT EAST-NORTHEAST INTO THE  
EVENING. IF THUNDERSTORMS DEVELOP, SOME WILL LIKELY BECOME SEVERE  
WITH DAMAGING TO DESTRUCTIVE HAIL BEING THE GREATEST THREAT.  
THERE MAY ALSO BE A DAMAGING WIND THREAT AND A TORNADO THREAT  
WITH SOME STORMS.  
 
LATE THURSDAY AFTERNOON INTO THE EARLY EVENING, HOT TEMPERATURES,  
DRY CONDITIONS, AND GUSTY SOUTHWEST WINDS BEHIND THE COLD FRONT  
MAY BRING A BRIEF PERIOD OF ELEVATED FIRE DANGER FOR PORTIONS OF  
NORTHERN AND CENTRAL ILLINOIS.  
 
ON FRIDAY, STRONG WEST-SOUTHWEST WINDS AND VERY WARM AND DRY  
CONDITIONS WILL RESULT IN POTENTIALLY SIGNIFICANT FIRE DANGER.  
   
SPOTTER INFORMATION STATEMENT
 
 
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.  
 
GENERAL STORM MOTION OF THE DAY:  
 
NEARLY STATIONARY TO AT TIMES VARIABLE LESS THAN 10 MPH.  
 

 
 
LMZ740>745-151800-  
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-  
100 PM CDT WED MAY 14 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...  
 
SIGNIFICANT FOG RISK.  
LIMITED THUNDERSTORM RISK.  
   
DAYS TWO THROUGH SEVEN
 
THURSDAY THROUGH TUESDAY.  
 
THURSDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:  
LEVEL 3 OF 5 SEVERE THUNDERSTORM RISK.  
LIMITED FOG RISK IN THE MORNING.  
FRIDAY...  
GALE FORCE WINDS POSSIBLE.  
LIMITED THUNDERSTORM RISK.  
SATURDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
MONDAY AND TUESDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
 

 
 
KJB  
 
VISIT US AT WWW.WEATHER.GOV/CHICAGO  
 
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