374  
WWUS73 KLOT 210816  
NPWLOT  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
316 AM CDT SUN APR 21 2024  
 
ILZ003>005-008-010>012-019>021-032-211300-  
/O.CON.KLOT.FZ.W.0001.000000T0000Z-240421T1300Z/  
WINNEBAGO-BOONE-MCHENRY-OGLE-LEE-DE KALB-KANE-LA SALLE-KENDALL-  
GRUNDY-LIVINGSTON-  
INCLUDING THE CITIES OF ROCKFORD, BELVIDERE, CRYSTAL LAKE,  
ALGONQUIN, MCHENRY, WOODSTOCK, ROCHELLE, OREGON, BYRON, DIXON,  
DEKALB, SYCAMORE, AURORA, ELGIN, OTTAWA, STREATOR, LA SALLE,  
MENDOTA, MARSEILLES, OSWEGO, YORKVILLE, PLANO, MORRIS, COAL CITY,  
MINOOKA, PONTIAC, DWIGHT, AND FAIRBURY  
316 AM CDT SUN APR 21 2024  
   
..FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING
 
 
* WHAT...SUB-FREEZING TEMPERATURES IN THE UPPER 20S TO AROUND 30  
DEGREES.  
 
* WHERE...PORTIONS OF CENTRAL, NORTH CENTRAL AND NORTHEAST  
ILLINOIS.  
 
* WHEN...UNTIL 8 AM CDT THIS MORNING.  
 
* IMPACTS...FROST AND FREEZE CONDITIONS WILL KILL CROPS, OTHER  
SENSITIVE VEGETATION AND POSSIBLY DAMAGE UNPROTECTED OUTDOOR  
PLUMBING.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD. TO PREVENT  
FREEZING AND POSSIBLE BURSTING OF OUTDOOR WATER PIPES THEY SHOULD  
BE WRAPPED, DRAINED, OR ALLOWED TO DRIP SLOWLY. THOSE THAT HAVE  
IN-GROUND SPRINKLER SYSTEMS SHOULD DRAIN THEM AND COVER ABOVE-  
GROUND PIPES TO PROTECT THEM FROM FREEZING.  
 

 
 

 
 
ILZ006-013-023-033-039-103-105>108-INZ001-002-010-011-019-211300-  
/O.CON.KLOT.FR.Y.0001.000000T0000Z-240421T1300Z/  
LAKE IL-DUPAGE-KANKAKEE-IROQUOIS-FORD-NORTHERN COOK-SOUTHERN COOK-  
NORTHERN WILL-SOUTHERN WILL-EASTERN WILL-LAKE IN-PORTER-NEWTON-  
JASPER-BENTON-  
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,  
GURNEE, NAPERVILLE, WHEATON, DOWNERS GROVE, LOMBARD,  
CAROL STREAM, KANKAKEE, BOURBONNAIS, BRADLEY, WATSEKA, GILMAN,  
PAXTON, GIBSON CITY, EVANSTON, DES PLAINES, SCHAUMBURG, PALATINE,  
NORTHBROOK, CALUMET CITY, OAK FOREST, LEMONT, ORLAND PARK,  
PARK FOREST, JOLIET, BOLINGBROOK, PLAINFIELD, MOKENA, CHANNAHON,  
MANHATTAN, WILMINGTON, CRETE, PEOTONE, BEECHER, GARY, HAMMOND,  
MERRILLVILLE, PORTAGE, VALPARAISO, CHESTERTON, ROSELAWN,  
KENTLAND, MOROCCO, RENSSELAER, DEMOTTE, FOWLER, AND OXFORD  
316 AM CDT SUN APR 21 2024 /416 AM EDT SUN APR 21 2024/  
 
...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT /9 AM EDT/  
THIS MORNING...  
 
* WHAT...TEMPERATURES AS LOW AS THE LOWER 30S WILL RESULT IN  
FROST FORMATION.  
 
* WHERE...PORTIONS OF EAST CENTRAL AND NORTHEAST ILLINOIS AND  
NORTHWEST INDIANA.  
 
* WHEN...UNTIL 8 AM CDT /9 AM EDT/ THIS MORNING.  
 
* IMPACTS...FROST COULD KILL SENSITIVE OUTDOOR VEGETATION IF  
LEFT UNCOVERED.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD.  
 

 
 

 
 
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