640  
WWUS73 KDVN 041411  
NPWDVN  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE QUAD CITIES IA IL  
911 AM CDT FRI SEP 4 2026  
 
IAZ063>065-067-068-076>078-087>089-098-099-ILZ015-024>026-034-035-  
MOZ009-010-042215-  
/O.CON.KDVN.XH.W.0003.000000T0000Z-260906T0000Z/  
IOWA-JOHNSON-CEDAR-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-  
JEFFERSON-HENRY IA-DES MOINES-VAN BUREN-LEE-ROCK ISLAND-MERCER-  
HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-  
INCLUDING THE CITIES OF ROCK ISLAND, OQUAWKA, DAVENPORT, FAIRFIELD,  
IOWA CITY, SIGOURNEY, CARTHAGE, TIPTON, MOUNT PLEASANT, FORT MADISON,  
BETTENDORF, KAHOKA, MEMPHIS, BURLINGTON, MARENGO, KEOSAUQUA,  
WASHINGTON, WAPELLO, MOLINE, ALEDO, MONMOUTH, MUSCATINE, AND MACOMB  
911 AM CDT FRI SEP 4 2026  
   
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY
 
 
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES OF 100 TO  
110.  
 
* WHERE...PORTIONS OF NORTHWEST AND WEST CENTRAL ILLINOIS, EAST  
CENTRAL AND SOUTHEAST IOWA, AND NORTHEAST MISSOURI.  
 
* WHEN...UNTIL 7 PM CDT SATURDAY.  
 
* 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.  
 
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.  
 
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND  
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN  
SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT  
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN  
EMERGENCY! CALL 9 1 1.  
 

 
 

 
 
ILZ016>018-042215-  
/O.CON.KDVN.XH.W.0003.000000T0000Z-260905T0000Z/  
HENRY IL-BUREAU-PUTNAM-  
INCLUDING THE CITIES OF PRINCETON, GENESEO, AND HENNEPIN  
911 AM CDT FRI SEP 4 2026  
 
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS  
EVENING...  
 
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES OF 100 TO  
110.  
 
* WHERE...BUREAU, PUTNAM, AND HENRY IL COUNTIES.  
 
* WHEN...UNTIL 7 PM CDT THIS 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.  
 
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.  
 
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND  
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN  
SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT  
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN  
EMERGENCY! CALL 9 1 1.  
 

 
 

 
 
IAZ040>042-051>054-066-ILZ001-002-007-009-042215-  
/O.CON.KDVN.HT.Y.0009.000000T0000Z-260905T0000Z/  
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-CLINTON-  
JODAVIESS-STEPHENSON-CARROLL-WHITESIDE-  
INCLUDING THE CITIES OF FREEPORT, GALENA, MAQUOKETA, INDEPENDENCE,  
DUBUQUE, ANAMOSA, STERLING, VINTON, CLINTON, MANCHESTER, CEDAR  
RAPIDS, AND MOUNT CARROLL  
911 AM CDT FRI SEP 4 2026  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
 
 
* WHAT...HEAT INDEX VALUES OF 100 TO 105.  
 
* WHERE...PORTIONS OF NORTHWEST ILLINOIS AND EAST CENTRAL AND  
NORTHEAST IOWA.  
 
* WHEN...UNTIL 7 PM CDT THIS EVENING.  
 
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT  
ILLNESSES.  
 
* ADDITIONAL DETAILS...THUNDERSTORMS AND STORM OUTFLOW MAY INTERRUPT  
THE HEAT AT TIMES.  
 
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.  
 
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND  
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN  
SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT  
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN  
EMERGENCY! CALL 9 1 1.  
 

 
 

 
 
GROSS  
 
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