778  
FLUS43 KLOT 302134  
HWOLOT  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
434 PM CDT THU MAR 30 2017  
 
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-  
312145-  
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-  
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-  
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-  
434 PM CDT THU MAR 30 2017 /534 PM EDT THU MAR 30 2017/  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...  
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.  
   
DAY ONE
 
TONIGHT.  
 
WEATHER HAZARDS EXPECTED:  
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:  
ELEVATED TORNADO RISK SOUTH OF THE KANKAKEE RIVER.  
ELEVATED HAIL RISK...UP TO NICKEL SIZE.  
ELEVATED THUNDERSTORM WIND DAMAGE RISK...UP TO 60 MPH.  
LIMITED FLOODING RISK.  
 
MANY AREA RIVERS HAVE EXPERIENCED SIGNIFICANT RISES DUE TO  
WIDESPREAD RAINFALL OF 1.5 TO 2.5 INCHES. MANY RIVERS HAVE  
ALREADY REACHED FLOOD STAGE AND OTHERS WILL RISE TO FLOOD STAGE  
OVERNIGHT TONIGHT AS ADDITIONAL RAIN MOVES INTO THE AREA THIS  
AFTERNOON AND EVENING.  
 
DISCUSSION:  
 
A SECOND WAVE OF THUNDERSTORMS WILL MOVE THROUGH PORTIONS OF  
EAST-CENTRAL ILLINOIS AND NORTHWEST INDIANA, GENERALLY SOUTHEAST  
OF A LINE FROM GARY TO KANKAKEE TO GIBSON CITY. SOME OF THE  
STRONGER STORMS WILL HAVE TO POTENTIAL TO LOCALLY STRONG WIND  
GUSTS TO 60 MPH AND UP TO 1 INCH HAIL. ADDITIONAL HEAVY RAINFALL  
IS ALSO POSSIBLE, AGGRAVATING ONGOING FLOODING ISSUES.  
   
DAYS TWO THROUGH SEVEN
 
FRIDAY THROUGH WEDNESDAY.  
 
SUNDAY...  
LIMITED THUNDERSTORM RISK.  
 
MANY AREA RIVERS WILL REMAIN AT FLOOD STAGE UNTIL EARLY NEXT WEEK.  
   
SPOTTER INFORMATION STATEMENT
 
 
SPOTTERS WILL LIKELY BE NEEDED SOUTHEAST OF A LINE FROM GARY TO  
KANKAKEE TO GIBSON CITY THROUGH THIS EVENING.  
 
GENERAL STORM MOTION OF THE DAY:  
 
MOVING NORTHEAST AT 40 MPH.  
 

 
 

 
 
LMZ740>745-312145-  
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-  
434 PM CDT THU MAR 30 2017  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE  
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE  
MICHIGAN.  
   
DAY ONE
 
TONIGHT.  
 
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
   
DAYS TWO THROUGH SEVEN
 
FRIDAY THROUGH WEDNESDAY.  
 
FRIDAY THROUGH SATURDAY MORNING...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
 
WEDNESDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
 

 
 

 
 
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-  
870-872-874-876-878-312145-  
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 FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID  
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-  
434 PM CDT THU MAR 30 2017  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE  
MICHIGAN.  
   
DAY ONE
 
TONIGHT.  
 
OCCASIONAL GALE FORCE GUSTS TO 35 KT ARE POSSIBLE.  
   
DAYS TWO THROUGH SEVEN
 
FRIDAY THROUGH WEDNESDAY.  
 
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.  
 

 
 

 
 
VISIT US AT HTTP://WEATHER.GOV/CHICAGO  
 
FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:  
WWW.FACEBOOK.COM/NWSCHICAGO  
WWW.TWITTER.COM/NWSCHICAGO  
WWW.YOUTUBE.COM/NWSCHICAGO  
 
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