863  
FLUS43 KLOT 190916  
HWOLOT  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
416 AM CDT SUN MAY 19 2019  
 
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-  
200930-  
WINNEBAGO-BOONE-MCHENRY-LAKE-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK-  
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-  
PORTER-NEWTON-JASPER-BENTON-  
416 AM CDT SUN MAY 19 2019 /516 AM EDT SUN MAY 19 2019/  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL  
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.  
   
DAY ONE
 
TODAY AND TONIGHT.  
 
WEATHER HAZARDS EXPECTED...  
 
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:  
LIMITED TORNADO RISK.  
ELEVATED HAIL RISK...UP TO 1 INCH IN DIAMETER.  
ELEVATED DAMAGING WIND RISK...UP TO 60 MPH.  
LIMITED NON THUNDERSTORM WIND RISK.  
 
DISCUSSION...  
 
STRONG SOUTHERLY WINDS AHEAD OF AN APPROACHING COLD FRONT WILL BE  
THE FIRST CONCERN TODAY. THUNDERSTORMS THAT MAY DEVELOP ALONG THE  
FRONT ALSO COULD LOCALLY ENHANCE THESE STRONG WINDS AND PRODUCE  
DAMAGING GUSTS. THE PRIMARY AREA OF CONCERN IS EAST OF I-55 AND  
THE PRIMARY PERIOD OF CONCERN IS LATE MORNING INTO EARLY  
AFTERNOON.  
   
DAYS TWO THROUGH SEVEN
 
MONDAY THROUGH SATURDAY.  
 
TUESDAY...  
LIMITED FLOODING RISK.  
ELEVATED THUNDERSTORM RISK.  
LIMITED NON THUNDERSTORM WIND RISK.  
WEDNESDAY THROUGH SATURDAY...  
LIMITED THUNDERSTORM RISK.  
 
DISCUSSION:  
 
A VERY STRONG LOW PRESSURE SYSTEM DEVELOPING OVER THE PLAINS  
EARLY THIS WEEK COULD BRING HEAVY RAIN AND POSSIBLY SEVERE  
STORMS TO THE OUTLOOK AREA LATE TUESDAY INTO TUESDAY NIGHT.  
   
SPOTTER INFORMATION STATEMENT
 
 
SPOTTERS MAY BE NEEDED TOWARD MID DAY.  
 
GENERAL STORM MOTION OF THE DAY:  
 
MOVING TOWARD THE NORTHEAST AT 50 MPH.  
 

 
 
LMZ740>745-200930-  
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-  
416 AM CDT SUN MAY 19 2019  
 
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
 
TODAY AND TONIGHT.  
 
WEATHER HAZARDS EXPECTED...  
 
GALE FORCE WINDS AND OR VERY HAZARDOUS WAVES.  
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:  
LIMITED WATERSPOUT RISK.  
ELEVATED HAIL RISK...UP TO QUARTER SIZED.  
ELEVATED THUNDERSTORM WIND GUST RISK...UP TO 60 KNOTS.  
   
DAYS TWO THROUGH SEVEN
 
MONDAY THROUGH SATURDAY.  
 
MONDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
TUESDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
ELEVATED THUNDERSTORM RISK.  
WEDNESDAY...  
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.  
LIMITED THUNDERSTORM RISK.  
THURSDAY THROUGH SATURDAY...  
LIMITED THUNDERSTORM RISK.  
 

 
 
LENNING  
 
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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