039  
WWUS83 KLOT 211755  
SPSLOT  
 
SPECIAL WEATHER STATEMENT  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
1155 AM CST SUN FEB 21 2021  
 
ILZ006-012-013-019>021-103>108-INZ001-002-220200-  
LAKE IL-KANE-DUPAGE-LA SALLE-KENDALL-GRUNDY-NORTHERN COOK-  
CENTRAL COOK-SOUTHERN COOK-NORTHERN WILL-SOUTHERN WILL-  
EASTERN WILL-LAKE IN-PORTER-  
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,  
GURNEE, AURORA, ELGIN, NAPERVILLE, WHEATON, DOWNERS GROVE,  
LOMBARD, CAROL STREAM, OTTAWA, STREATOR, LA SALLE, MENDOTA,  
MARSEILLES, OSWEGO, YORKVILLE, PLANO, MORRIS, COAL CITY, MINOOKA,  
EVANSTON, DES PLAINES, SCHAUMBURG, PALATINE, NORTHBROOK, CHICAGO,  
CICERO, OAK LAWN, OAK PARK, LA GRANGE, CALUMET CITY, OAK FOREST,  
LEMONT, ORLAND PARK, PARK FOREST, JOLIET, BOLINGBROOK,  
PLAINFIELD, MOKENA, CHANNAHON, MANHATTAN, WILMINGTON, CRETE,  
PEOTONE, BEECHER, GARY, HAMMOND, MERRILLVILLE, PORTAGE,  
VALPARAISO, AND CHESTERTON  
1155 AM CST SUN FEB 21 2021  
   
..PERIOD OF HEAVY SNOW THIS AFTERNOON INTO THIS EVENING
 
 
SNOW IS EXPECTED TO SPREAD ACROSS NORTHERN ILLINOIS THIS  
AFTERNOON AND FAR NORTHWEST INDIANA BY EARLY THIS EVENING, WITH  
SNOW TOTALS OF MAINLY 2 TO 3 INCHES EXPECTED GENERALLY ALONG AND  
NORTH OF THE INTERSTATE 80 CORRIDOR.  
 
HEAVY BURSTS OF SNOW WILL BE POSSIBLE AT TIMES, INCLUDING RIGHT AT  
THE INITIAL ONSET OF THE SNOW, WHICH MAY LOWER VISIBILITIES WELL  
UNDER ONE MILE AT TIMES. UNTREATED SURFACES WILL LIKELY BECOME  
SNOW COVERED AND SLIPPERY. THE SNOW WILL SLOWLY DIMINISH IN  
INTENSITY INTO THE EVENING HOURS AND SOME RAIN MAY BEGIN TO MIX IN  
AS WELL, ESPECIALLY NEAR THE I-80 CORRIDOR.  
 

 
 
ILZ003>005-008-010-011-220200-  
WINNEBAGO-BOONE-MCHENRY-OGLE-LEE-DE KALB-  
INCLUDING THE CITIES OF ROCKFORD, BELVIDERE, CRYSTAL LAKE,  
ALGONQUIN, MCHENRY, WOODSTOCK, ROCHELLE, OREGON, BYRON, DIXON,  
DEKALB, AND SYCAMORE  
1155 AM CST SUN FEB 21 2021  
   
..PERIOD OF HEAVY SNOW THIS AFTERNOON INTO THIS EVENING
 
 
SNOW IS EXPECTED TO SPREAD ACROSS NORTHWEST AND NORTHERN ILLINOIS  
THIS AFTERNOON WHERE SNOW TOTALS OF 2 TO 4 INCHES ARE EXPECTED.  
 
HEAVY SNOWFALL RATES ARE LIKELY, INCLUDING RIGHT AT THE INITIAL  
ONSET OF THE SNOW, WHICH WILL LOWER VISIBILITIES UNDER A HALF MILE  
AT TIMES. SNOW RATES BRIEFLY IN EXCESS OF 1 INCH PER HOUR ARE  
POSSIBLE. UNTREATED SURFACES WILL LIKELY BECOME SNOW COVERED AND  
SLIPPERY. THE SNOW WILL SLOWLY DIMINISH IN INTENSITY INTO THE  
EVENING HOURS.  
 

 
 
OGOREK  
 
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