136  
FLUS43 KLOT 182021  
HWOLOT  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
321 PM CDT WED JUL 18 2018  
 
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-  
192030-  
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DEKALB-KANE-DUPAGE-COOK-  
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-  
LAKE IN-PORTER-NEWTON-JASPER-BENTON-  
321 PM CDT WED JUL 18 2018 /421 PM EDT WED JUL 18 2018/  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL  
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.  
   
DAY ONE
 
TONIGHT.  
 
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.  
   
DAYS TWO THROUGH SEVEN
 
THURSDAY THROUGH TUESDAY.  
 
THURSDAY NIGHT...  
ELEVATED THUNDERSTORM RISK.  
LIMITED FLOODING RISK.  
HIGH SWIM RISK IL SHORES.  
FRIDAY...  
LIMITED SEVERE THUNDERSTORM RISK.  
LIMITED LAKESHORE FLOOD RISK.  
HIGH SWIM RISK IL SHORES.  
SATURDAY AND SUNDAY...  
LIMITED THUNDERSTORM RISK.  
LIMITED LAKESHORE FLOOD RISK.  
HIGH SWIM RISK, MAINLY SUNDAY.  
TUESDAY...  
LIMITED THUNDERSTORM RISK.  
 
DISCUSSION:  
 
A SLOW MOVING STORM SYSTEM WILL IMPACT THE AREA THURSDAY NIGHT  
THROUGH THE WEEKEND. THIS WILL PRODUCE IN PERIODS OF SHOWERS AND  
THUNDERSTORMS, ESPECIALLY THURSDAY NIGHT AND FRIDAY. SOME OF THESE  
STORMS MAY RESULT IN LOCALLY HEAVY RAINFALL. A FEW STRONG STORMS  
ARE ALSO POSSIBLE SOUTH OF I-80 FRIDAY AFTERNOON.  
   
SPOTTER INFORMATION STATEMENT
 
 
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.  
 

 
 
LMZ740>745-192030-  
WINTHROP HARBOR TO WILMETTE HARBOR-  
WILMETTE HARBOR TO NORTHERLY ISLAND-  
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-  
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-  
321 PM CDT WED JUL 18 2018  
 
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.  
 
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.  
   
DAYS TWO THROUGH SEVEN
 
THURSDAY THROUGH TUESDAY.  
 
THURSDAY NIGHT...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY IL SHORES.  
ELEVATED THUNDERSTORM RISK.  
FRIDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY IL SHORES.  
LIMITED SEVERE THUNDERSTORM RISK.  
SATURDAY AND SUNDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
LIMITED THUNDERSTORM RISK.  
 

 
 
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-  
870-872-874-876-878-192030-  
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE  
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH  
FOX ISLAND 5 NM OFFSHORE-  
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE  
TO MID LAKE-  
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN HOLLAND TO WHITEHALL MI 5 NM OFF SHORE TO MID-  
LINE OF LAKE-  
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO  
MID LAKE-  
321 PM CDT WED JUL 18 2018  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE OPEN WATERS  
OF LAKE MICHIGAN.  
   
DAY ONE
 
TONIGHT.  
 
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.  
   
DAYS TWO THROUGH SEVEN
 
THURSDAY THROUGH TUESDAY.  
 
THURSDAY NIGHT...  
ELEVATED THUNDERSTORM RISK.  
FRIDAY...  
LIMITED SEVERE THUNDERSTORM RISK SOUTH.  
SATURDAY AND SUNDAY...  
LIMITED THUNDERSTORM RISK.  
 

 
 
KJB  
 
VISIT US AT HTTP://WEATHER.GOV/CHICAGO  
 
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