914
WWUS73 KLOT 031853
NPWLOT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
153 PM CDT THU SEP 3 2026
ILZ105-032000-
/O.CAN.KLOT.XH.W.0003.000000T0000Z-260904T0000Z/
SOUTHERN COOK-
INCLUDING THE CITIES OF LEMONT, PARK FOREST, OAK FOREST, ORLAND PARK,
AND CALUMET CITY
153 PM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IS CANCELLED
ONSHORE FLOW HAS BROUGHT AN END TO THE EXTREME HEAT.
ILZ019-021-023-032-033-039-INZ010-011-019-040500-
/O.EXT.KLOT.HT.Y.0006.000000T0000Z-260905T0000Z/
LA SALLE-GRUNDY-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-NEWTON-JASPER-
BENTON-
INCLUDING THE CITIES OF PONTIAC, PAXTON, COAL CITY, ROSELAWN,
MARSEILLES, BOURBONNAIS, BRADLEY, DEMOTTE, OTTAWA, MINOOKA, FOWLER,
GIBSON CITY, WATSEKA, FAIRBURY, MENDOTA, MORRIS, RENSSELAER,
KANKAKEE, DWIGHT, KENTLAND, MOROCCO, STREATOR, LA SALLE, OXFORD, AND
GILMAN
153 PM CDT THU SEP 3 2026 /253 PM EDT THU SEP 3 2026/
..HEAT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT /8 PM EDT/ FRIDAY
* WHAT...HEAT INDEX VALUES OF 100 TO 105 EXPECTED.
* WHERE...PORTIONS OF NORTHERN AND CENTRAL ILLINOIS NEAR AND SOUTH OF
I-80, AS WELL AS ALL OF NORTHWEST INDIANA.
* WHEN...UNTIL 7 PM CDT /8 PM EDT/ FRIDAY.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES ESPECIALLY AFTER SEVERAL DAYS OF DANGEROUS HEAT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
CONSIDER ALTERING OUTDOOR PLANS. IF OUTDOORS FOR PROLONGED PERIODS OF
TIME, WEAR LIGHTWEIGHT AND LOOSE FITTING CLOTHING. TAKE ACTION WHEN
YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE.
ILZ010-020-106>108-INZ001-002-040200-
/O.CON.KLOT.HT.Y.0006.000000T0000Z-260904T0200Z/
LEE-KENDALL-NORTHERN WILL-SOUTHERN WILL-EASTERN WILL-LAKE IN-
PORTER-
INCLUDING THE CITIES OF CHESTERTON, OSWEGO, BOLINGBROOK, JOLIET,
HAMMOND, MERRILLVILLE, MANHATTAN, DIXON, MOKENA, CHANNAHON,
VALPARAISO, WILMINGTON, PLANO, GARY, PLAINFIELD, CRETE, PEOTONE,
PORTAGE, BEECHER, AND YORKVILLE
153 PM CDT THU SEP 3 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES OF 100 TO 105 EXPECTED.
* WHERE...IN ILLINOIS, LEE, EASTERN WILL, KENDALL, NORTHERN WILL, AND
SOUTHERN WILL COUNTIES. IN INDIANA, LAKE IN AND PORTER COUNTIES.
* WHEN...UNTIL 9 PM CDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES ESPECIALLY AFTER SEVERAL DAYS OF DANGEROUS HEAT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
CONSIDER ALTERING OUTDOOR PLANS. IF OUTDOORS FOR PROLONGED PERIODS OF
TIME, WEAR LIGHTWEIGHT AND LOOSE FITTING CLOTHING. TAKE ACTION WHEN
YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE.
BIRK
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