607
WWUS73 KLOT 281618
NPWLOT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1118 AM CDT SUN JUN 28 2026
ILZ103>105-290230-
/O.UPG.KLOT.XH.A.0001.260629T1700Z-260702T0300Z/
/O.NEW.KLOT.XH.W.0001.260629T1700Z-260702T0300Z/
NORTHERN COOK-CENTRAL COOK-SOUTHERN COOK-
INCLUDING THE CITIES OF CALUMET CITY, EVANSTON, CICERO,
SCHAUMBURG, CHICAGO, LA GRANGE, OAK FOREST, PARK FOREST, LEMONT,
PALATINE, OAK LAWN, DES PLAINES, OAK PARK, ORLAND PARK, AND
NORTHBROOK
1118 AM CDT SUN JUN 28 2026
...EXTREME HEAT WARNING IN EFFECT FROM NOON MONDAY TO 10 PM CDT
WEDNESDAY...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES AROUND
105 EXPECTED EACH AFTERNOON.
* WHERE...COOK COUNTY.
* 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.
THE MAGNITUDE OF ANTICIPATED HEAT, COMBINED WITH OPPRESSIVE WARMTH
AT NIGHT WILL LEAD TO HAZARDOUS CONDITIONS, PARTICULARLY FOR THE
ELDERLY AND THOSE WITH PRE-EXISTING HEALTH CONDITIONS. RESIDENTS OF
THE CITY OF CHICAGO CAN CALL 3 1 1 TO REQUEST WELL BEING CHECKS FOR
ELDERLY FRIENDS OR FAMILY MEMBERS, OR FOR INFORMATION ON FINDING THE
NEAREST COOLING CENTER.
ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-INZ001-002-
010-011-019-290230-
/O.CON.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 DOWNERS GROVE, PAXTON, PORTAGE, CAROL
STREAM, WAUKEGAN, OXFORD, MERRILLVILLE, BOLINGBROOK, NAPERVILLE,
DIXON, JOLIET, MARSEILLES, DWIGHT, SYCAMORE, CHESTERTON, PEOTONE,
FAIRBURY, ROCHELLE, MORRIS, COAL CITY, PLAINFIELD, PLANO,
HAMMOND, BELVIDERE, CRETE, ROCKFORD, MUNDELEIN, MCHENRY,
YORKVILLE, MANHATTAN, BRADLEY, MOROCCO, KANKAKEE, OSWEGO, FOWLER,
GILMAN, GARY, CRYSTAL LAKE, BOURBONNAIS, AURORA, MENDOTA, MOKENA,
BEECHER, VALPARAISO, WHEATON, OREGON, WOODSTOCK, GURNEE, GIBSON
CITY, WILMINGTON, BUFFALO GROVE, MINOOKA, DEKALB, PONTIAC,
RENSSELAER, BYRON, LOMBARD, OTTAWA, ELGIN, WATSEKA, KENTLAND,
CHANNAHON, ROSELAWN, LA SALLE, DEMOTTE, STREATOR, AND ALGONQUIN
1118 AM CDT SUN JUN 28 2026 /1218 PM EDT SUN JUN 28 2026/
...HEAT ADVISORY REMAINS 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
DK
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