588
WWUS73 KLOT 221958
NPWLOT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
258 PM CDT SUN JUN 22 2025
ILZ103>105-230600-
/O.CON.KLOT.XH.W.0001.000000T0000Z-250624T0500Z/
NORTHERN COOK-CENTRAL COOK-SOUTHERN COOK-
INCLUDING THE CITIES OF NORTHBROOK, CALUMET CITY, PALATINE, OAK
PARK, SCHAUMBURG, EVANSTON, OAK FOREST, LA GRANGE, PARK FOREST,
LEMONT, CHICAGO, ORLAND PARK, DES PLAINES, CICERO, AND OAK LAWN
258 PM CDT SUN JUN 22 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY
NIGHT...
* WHAT...DANGEROUSLY HOT AND HUMID CONDITIONS WITH HIGH TEMPERATURES
WELL INTO THE 90S AND AFTERNOON HEAT INDEX VALUES BETWEEN 100 AND
105 DEGREES OCCURRING THIS AFTERNOON AND EXPECTED ON MONDAY
AFTERNOON.
* WHERE...CENTRAL COOK, NORTHERN COOK, AND SOUTHERN COOK COUNTIES.
* WHEN...UNTIL MIDNIGHT CDT MONDAY NIGHT.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS. 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.
* ADDITIONAL DETAILS...HEAT INDICES WILL REMAIN IN THE 90S LATE INTO
THE EVENING HOURS WITH OVERNIGHT LOWS STRUGGLING TO FALL BELOW 80
DEGREES.
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.
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO EARLY MORNING
OR EVENING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND
HEAT STROKE.
ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-INZ001-002-
010-011-019-230600-
/O.CON.KLOT.HT.Y.0001.000000T0000Z-250624T0500Z/
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 OSWEGO, STREATOR, LA SALLE, PONTIAC,
CHANNAHON, ELGIN, DWIGHT, OTTAWA, BYRON, CRYSTAL LAKE, FOWLER,
OREGON, SYCAMORE, BUFFALO GROVE, MORRIS, DEKALB, MOKENA, CAROL
STREAM, WATSEKA, PEOTONE, MARSEILLES, PLAINFIELD, MUNDELEIN,
BEECHER, OXFORD, KANKAKEE, WAUKEGAN, KENTLAND, MINOOKA, ROCHELLE,
BRADLEY, HAMMOND, GURNEE, ALGONQUIN, BOURBONNAIS, PAXTON,
BOLINGBROOK, WILMINGTON, MERRILLVILLE, RENSSELAER, ROSELAWN,
GILMAN, WOODSTOCK, FAIRBURY, NAPERVILLE, MOROCCO, CHESTERTON,
PORTAGE, COAL CITY, MANHATTAN, BELVIDERE, MENDOTA, AURORA,
DEMOTTE, ROCKFORD, GIBSON CITY, JOLIET, GARY, DOWNERS GROVE,
CRETE, MCHENRY, WHEATON, PLANO, DIXON, VALPARAISO, LOMBARD, AND
YORKVILLE
258 PM CDT SUN JUN 22 2025 /358 PM EDT SUN JUN 22 2025/
...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/
MONDAY NIGHT...
* WHAT...HEAT INDEX VALUES OF UP TO 105 TO 110 DEGREES OCCURRING
THIS AFTERNOON AND PEAK AFTERNOON HEAT INDICES OF 100 TO 105
DEGREES EXPECTED ON MONDAY.
* WHERE...PORTIONS OF CENTRAL, EAST CENTRAL, NORTH CENTRAL, AND
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
* WHEN...UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
* ADDITIONAL DETAILS...HEAT IMPACTS WILL BE WORSENED BY CONSECUTIVE
DAYS OF HOT AND HUMID CONDITIONS, WITH OVERNIGHT LOWS IN THE MID
TO UPPER 70S PROVIDING LIMITED RELIEF.
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.
RC
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