320
WWUS73 KLOT 292013
NPWLOT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
313 PM CDT MON JUN 29 2026
ILZ103>105-300615-
/O.CON.KLOT.XH.W.0001.000000T0000Z-260702T0300Z/
NORTHERN COOK-CENTRAL COOK-SOUTHERN COOK-
INCLUDING THE CITIES OF OAK LAWN, SCHAUMBURG, LA GRANGE, CICERO,
ORLAND PARK, OAK PARK, DES PLAINES, EVANSTON, PARK FOREST,
LEMONT, PALATINE, NORTHBROOK, CALUMET CITY, OAK FOREST, AND
CHICAGO
313 PM CDT MON JUN 29 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM CDT
WEDNESDAY...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES AROUND
105 EXPECTED EACH AFTERNOON.
* WHERE...CENTRAL COOK, NORTHERN COOK, AND SOUTHERN COOK COUNTIES.
* WHEN...UNTIL 10 PM CDT WEDNESDAY.
* 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-
010-011-019-300615-
/O.CON.KLOT.HT.Y.0001.000000T0000Z-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 CAROL STREAM, JOLIET, DEKALB, CHANNAHON,
WILMINGTON, ALGONQUIN, SYCAMORE, BRADLEY, DIXON, PEOTONE, MORRIS,
WATSEKA, GIBSON CITY, HAMMOND, KENTLAND, PAXTON, WOODSTOCK,
KANKAKEE, CHESTERTON, MOROCCO, MANHATTAN, CRYSTAL LAKE, BYRON,
MENDOTA, MUNDELEIN, CRETE, ROSELAWN, GARY, STREATOR, AURORA,
BUFFALO GROVE, MARSEILLES, LA SALLE, PLANO, WAUKEGAN, DOWNERS
GROVE, COAL CITY, LOMBARD, BOLINGBROOK, MERRILLVILLE, PLAINFIELD,
YORKVILLE, GILMAN, OXFORD, MCHENRY, GURNEE, BELVIDERE, DWIGHT,
OREGON, ROCHELLE, PONTIAC, MINOOKA, OSWEGO, FOWLER, MOKENA,
OTTAWA, FAIRBURY, PORTAGE, VALPARAISO, RENSSELAER, DEMOTTE,
NAPERVILLE, WHEATON, ELGIN, ROCKFORD, BEECHER, AND BOURBONNAIS
313 PM CDT MON JUN 29 2026 /413 PM EDT MON JUN 29 2026/
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 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...UNTIL 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.
BIRK
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