091
WWUS73 KDVN 200745
NPWDVN
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
245 AM CDT MON JUL 20 2026
IAZ051-063-076>078-087>089-098-099-ILZ025-034-MOZ009-010-201545-
/O.CON.KDVN.HT.Y.0004.260720T1700Z-260721T0100Z/
BENTON-IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES
MOINES-VAN BUREN-LEE-HENDERSON-HANCOCK-SCOTLAND-CLARK-
INCLUDING THE CITIES OF MARENGO, CARTHAGE, WAPELLO, WASHINGTON,
MEMPHIS, VINTON, OQUAWKA, MOUNT PLEASANT, FORT MADISON, KAHOKA,
KEOSAUQUA, FAIRFIELD, SIGOURNEY, AND BURLINGTON
245 AM CDT MON JUL 20 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING...
* WHAT...PEAK HEAT INDEX VALUES BETWEEN 100 TO 105 EXPECTED.
* WHERE...PORTIONS OF WEST CENTRAL ILLINOIS, EAST CENTRAL AND
SOUTHEAST IOWA, AND NORTHEAST MISSOURI.
* WHEN...FROM NOON TODAY TO 8 PM CDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
* ADDITIONAL DETAILS...A ROUND OF SCATTERED SHOWERS AND THUNDERSTORMS
IS EXPECTED THIS MORNING INTO THE EARLY AFTERNOON, MAINLY FOR
COUNTIES ALONG AND NORTH OF I-80. THE RAIN AND LINGERING CLOUD
COVER COULD HOLD PEAK HEAT INDICES LOWER THAN CURRENTLY FORECAST
FOR AREAS NORTH OF I-80.
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.
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