230
WGUS63 KDMX 150756
FFADMX
FLOOD WATCH
NATIONAL WEATHER SERVICE DES MOINES IA
256 AM CDT SAT AUG 15 2026
IAZ044>050-057>062-070>075-081>086-092>097-151500-
/O.CON.KDMX.FA.A.0011.000000T0000Z-260815T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF CARROLL, BOONE, PERRY, KNOXVILLE, WAUKEE,
FONTANELLE, GLADBROOK, ADEL, LENOX, MOUNT AYR, CASEY, ALBIA,
NEWTON, ADAIR, NORWALK, GRINNELL, NEW MARKET, HUMESTON, OSCEOLA,
BLOOMFIELD, ALLERTON, TOLEDO, LAMONI, DYSART, LEON, CORYDON,
EXIRA, MARSHALLTOWN, ATLANTIC, DES MOINES, EARLHAM, TRAER,
OTTUMWA, PANORA, DENISON, STUART, PELLA, AMES, JEFFERSON,
AUDUBON, GREENFIELD, CARLISLE, GUTHRIE CENTER, CHARITON, CORNING,
SEYMOUR, INDIANOLA, CENTERVILLE, BAYARD, BEDFORD, CRESTON,
WINTERSET, TAMA, AND OSKALOOSA
256 AM CDT SAT AUG 15 2026
..FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...FOR HIGHWAY 30 COUNTIES AND AREAS SOUTH TO THE MISSOURI
BORDER IN CENTRAL IOWA.
* WHEN...UNTIL 10 AM CDT THIS MORNING.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
CREEKS AND STREAMS MAY RISE OUT OF THEIR BANKS. FLOODING MAY OCCUR
IN POOR DRAINAGE AND URBAN AREAS.
* ADDITIONAL DETAILS...
- SEVERAL ROUNDS OF RAIN HAVE BROUGHT 2 TO 6 INCHES OF RAIN TO
CENTRAL IOWA THIS WEEK. ADDITIONAL RAINFALL IS POSSIBLE
THROUGH EARLY THIS MORNING. SATURATED SOILS AND HIGH RAINFALL
RATES MAY OVERWHELM
CAPACITY, WHICH WILL INCREASE FLOODING POTENTIAL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
FOR THE LATEST STREAM OBSERVATIONS AND FORECASTS REFER TO
WEATHER.GOV/DESMOINES/WATER.
DONAVON
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