662
WWUS73 KDMX 010857
NPWDMX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
357 AM CDT TUE SEP 1 2026
IAZ027-028-038-039-049-050-011300-
/O.NEW.KDMX.FG.Y.0010.260901T0857Z-260901T1300Z/
BUTLER-BREMER-GRUNDY-BLACK HAWK-MARSHALL-TAMA-
INCLUDING THE CITIES OF APLINGTON, CLARKSVILLE, DIKE, CEDAR FALLS,
GLADBROOK, GREENE, DUMONT, TAMA, ALLISON, REINBECK, SHELL ROCK,
PARKERSBURG, WATERLOO, WAVERLY, DYSART, TOLEDO, TRAER, CONRAD,
WELLSBURG, MARSHALLTOWN, AND GRUNDY CENTER
357 AM CDT TUE SEP 1 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
* WHAT...VISIBILITY AROUND A QUARTER MILE OR LESS IN DENSE FOG.
* WHERE...GRUNDY, MARSHALL, TAMA, BUTLER, BLACK HAWK, AND BREMER
COUNTIES.
* WHEN...UNTIL 8 AM CDT THIS MORNING.
* IMPACTS...LOW VISIBILITY COULD MAKE DRIVING CONDITIONS HAZARDOUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
IAZ059>062-072>075-082>086-093>097-011900-
/O.CON.KDMX.HT.Y.0006.000000T0000Z-260903T0000Z/
DALLAS-POLK-JASPER-POWESHIEK-MADISON-WARREN-MARION-MAHASKA-UNION-
CLARKE-LUCAS-MONROE-WAPELLO-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF OTTUMWA, WINTERSET, OSCEOLA, INDIANOLA,
NORWALK, EARLHAM, ALBIA, CARLISLE, HUMESTON, CENTERVILLE, KNOXVILLE,
SEYMOUR, WAUKEE, CORYDON, BLOOMFIELD, PELLA, OSKALOOSA, MOUNT AYR,
GRINNELL, LEON, NEWTON, CHARITON, DES MOINES, PERRY, LAMONI,
ALLERTON, ADEL, AND CRESTON
357 AM CDT TUE SEP 1 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY
* WHAT...HEAT INDEX VALUES UP TO 100-103 DEGREES.
* WHERE...PORTIONS OF CENTRAL AND SOUTH CENTRAL IOWA, INCLUDING THE
DES MOINES METRO.
* WHEN...UNTIL 7 PM CDT WEDNESDAY.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
* ADDITIONAL DETAILS...WHILE HEAT INDEX VALUES MAY NOT REACH 105
DEGREES EACH DAY, THE COMBINATION OF THE LONGEVITY OF THE HEAT AND
LITTLE OR LIMITED RELIEF DURING THE OVERNIGHT PERIODS WITH WARM
LOWS HAVE PROMPTED THE MULTI-DAY HEAT ADVISORY.
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.
LEE
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