819  
FLUS43 KLOT 181024  
HWOLOT  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
424 AM CST SAT NOV 18 2017  
 
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-  
191030-  
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-  
424 AM CST SAT NOV 18 2017 /524 AM EST SAT NOV 18 2017/  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...  
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.  
   
DAY ONE
 
TODAY AND TONIGHT.  
 
WEATHER HAZARDS EXPECTED:  
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:  
LIMITED HAIL RISK...UP TO QUARTER SIZE.  
LIMITED FLOODING RISK.  
ELEVATED NON THUNDERSTORM WIND RISK.  
LIMITED FOG RISK.  
LIMITED SNOW RISK.  
 
DISCUSSION:  
 
STRONG LOW PRESSURE WILL MOVE ACROSS CENTRAL ILLINOIS AND INTO  
NORTHERN INDIANA TODAY. SCATTERED THUNDERSTORMS, AND LOCALLY  
HEAVY RAINFALL WILL BE POSSIBLE MAINLY SOUTH OF THE I-80  
CORRIDOR THROUGH THIS MORNING, WITH A MARGINAL RISK OF  
ISOLATED 1 INCH HAIL. RAINFALL IN EXCESS OF 1 INCH IS  
POSSIBLE ACROSS THIS SAME AREA, ESPECIALLY SOUTH OF A LINE  
FROM PONTIAC TO RENSSELAER. THUNDERSTORMS SHOULD MOVE OUT  
OF THE AREA BY MIDDAY. ELSEWHERE, RAIN MAY MIX WITH OR  
BRIEFLY CHANGE TO WET SNOW BEFORE ENDING ACROSS PARTS OF  
NORTHERN ILLINOIS THIS AFTERNOON. SOME MINOR SLUSHY  
ACCUMULATION MAY OCCUR ON GRASSY SURFACES. VERY STRONG  
NORTH TO NORTHWEST WINDS, WITH GUSTS AS HIGH AS 40 TO 45  
MPH, WILL DEVELOP ACROSS THE AREA BY LATE MORNING, AND  
PERSIST INTO TONIGHT. THESE WINDS WILL BUILD LARGE WAVES ON  
SOUTHERN LAKE MICHIGAN THIS AFTERNOON AND TONIGHT, WHICH MAY  
CAUSE LAKE SHORE FLOODING ALONG THE INDIANA LAKE MICHIGAN  
SHORE.  
 
   
DAYS TWO THROUGH SEVEN
 
SUNDAY THROUGH FRIDAY.  
 
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.  
   
SPOTTER INFORMATION STATEMENT
 
 
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.  
 
GENERAL STORM MOTION OF THE DAY:  
 
EAST AT 35 TO 40 MPH...  
 

 
 

 
 
LMZ740>745-191030-  
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-  
424 AM CST SAT NOV 18 2017  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE  
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE  
MICHIGAN.  
   
DAY ONE
 
TODAY AND TONIGHT.  
 
GALE FORCE WINDS AND VERY HAZARDOUS WAVES ARE LIKELY.  
   
DAYS TWO THROUGH SEVEN
 
SUNDAY THROUGH FRIDAY.  
 
SUNDAY THROUGH TUESDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
 

 
 

 
 
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-  
870-872-874-876-878-191030-  
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-  
424 AM CST SAT NOV 18 2017  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE  
MICHIGAN.  
   
DAY ONE
 
TODAY AND TONIGHT.  
 
GALE FORCE WINDS ARE LIKELY THROUGH LATE TONIGHT.  
   
DAYS TWO THROUGH SEVEN
 
SUNDAY THROUGH FRIDAY.  
 
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.  
 

 
 

 
 
RATZER  
 
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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