792
WWUS73 KDVN 111629
NPWDVN
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1129 AM CDT TUE AUG 11 2026
IAZ076>078-ILZ024-120030-
/O.EXA.KDVN.HT.Y.0007.260811T1700Z-260812T0100Z/
KEOKUK-WASHINGTON-LOUISA-MERCER-
INCLUDING THE CITIES OF WAPELLO, ALEDO, SIGOURNEY, AND WASHINGTON
1129 AM CDT TUE AUG 11 2026
..HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES OF 100 TO 105 EXPECTED.
* WHERE...IN ILLINOIS, MERCER COUNTY. IN IOWA, KEOKUK, LOUISA, AND
WASHINGTON COUNTIES.
* WHEN...UNTIL 8 PM CDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
* ADDITIONAL DETAILS...HEAT INDICES MAY BRIEFLY EXCEED 105 DEGREES IN
SOME AREAS. THUNDERSTORMS AND STORM OUTFLOW MAY ALSO INTERRUPT THE
HIGH 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.
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.
IAZ087>089-098-099-ILZ025-026-034-035-MOZ009-010-120030-
/O.CON.KDVN.HT.Y.0007.260811T1700Z-260812T0100Z/
JEFFERSON-HENRY IA-DES MOINES-VAN BUREN-LEE-HENDERSON-WARREN-
HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF FAIRFIELD, BURLINGTON, FORT MADISON, MACOMB,
MOUNT PLEASANT, MONMOUTH, MEMPHIS, KEOSAUQUA, KAHOKA, OQUAWKA, AND
CARTHAGE
1129 AM CDT TUE AUG 11 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES UP TO 105 EXPECTED.
* WHERE...PORTIONS OF WEST CENTRAL ILLINOIS, SOUTHEAST IOWA, AND
NORTHEAST MISSOURI.
* WHEN...UNTIL 8 PM CDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
* ADDITIONAL DETAILS...HEAT INDICES MAY BRIEFLY EXCEED 105 DEGREES IN
SOME AREAS. THUNDERSTORMS AND STORM OUTFLOW MAY ALSO INTERRUPT THE
HIGH 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.
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.
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