626
WWUS73 KLOT 280747
NPWLOT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
247 AM CDT SUN JUN 28 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-INZ001-002-
010-011-019-281800-
/O.NEW.KLOT.HT.Y.0001.260629T1700Z-260702T0300Z/
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-LA
SALLE-KENDALL-GRUNDY-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-NORTHERN
WILL-SOUTHERN WILL-EASTERN WILL-LAKE IN-PORTER-NEWTON-JASPER-
BENTON-
INCLUDING THE CITIES OF BRADLEY, PORTAGE, LA SALLE, MINOOKA,
HAMMOND, MERRILLVILLE, SYCAMORE, COAL CITY, KENTLAND, FOWLER,
MUNDELEIN, CRYSTAL LAKE, CAROL STREAM, FAIRBURY, DWIGHT,
WOODSTOCK, BELVIDERE, JOLIET, MOKENA, ELGIN, MORRIS, GARY,
PAXTON, VALPARAISO, LOMBARD, WATSEKA, CHESTERTON, WAUKEGAN,
GILMAN, OXFORD, DEMOTTE, OREGON, DIXON, NAPERVILLE, BUFFALO
GROVE, DEKALB, PLAINFIELD, BYRON, ROCHELLE, CRETE, WILMINGTON,
ROSELAWN, MOROCCO, BOURBONNAIS, GURNEE, YORKVILLE, OTTAWA,
MARSEILLES, WHEATON, PLANO, BEECHER, DOWNERS GROVE, OSWEGO,
AURORA, MENDOTA, PONTIAC, GIBSON CITY, PEOTONE, RENSSELAER,
ROCKFORD, MCHENRY, KANKAKEE, ALGONQUIN, CHANNAHON, BOLINGBROOK,
STREATOR, AND MANHATTAN
247 AM CDT SUN JUN 28 2026 /347 AM EDT SUN JUN 28 2026/
...HEAT ADVISORY IN EFFECT FROM NOON CDT /1 PM EDT/ MONDAY TO 10 PM
CDT /11 PM EDT/ WEDNESDAY...
* WHAT...HEAT INDEX VALUES AROUND 105 EXPECTED EACH AFTERNOON.
* WHERE...PORTIONS OF CENTRAL, EAST CENTRAL, NORTH CENTRAL, AND
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
* WHEN...FROM NOON CDT /1 PM EDT/ MONDAY TO 10 PM CDT /11 PM EDT/
WEDNESDAY.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
ILZ103>105-281800-
/O.CON.KLOT.XH.A.0001.260629T1700Z-260702T0300Z/
NORTHERN COOK-CENTRAL COOK-SOUTHERN COOK-
INCLUDING THE CITIES OF CICERO, PALATINE, OAK LAWN, OAK FOREST,
OAK PARK, LA GRANGE, DES PLAINES, NORTHBROOK, CALUMET CITY,
EVANSTON, ORLAND PARK, CHICAGO, SCHAUMBURG, LEMONT, AND PARK
FOREST
247 AM CDT SUN JUN 28 2026
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON
THROUGH WEDNESDAY EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES AROUND
105 POSSIBLE EACH AFTERNOON.
* WHERE...CENTRAL COOK, NORTHERN COOK, AND SOUTHERN COOK COUNTIES.
* WHEN...FROM MONDAY AFTERNOON THROUGH WEDNESDAY EVENING.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
KLUBER
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