777  
WGUS83 KDMX 190409  
FLSDMX  
 
FLOOD STATEMENT  
NATIONAL WEATHER SERVICE DES MOINES IA  
1109 PM CDT MON AUG 18 2025  
 
...THE FLOOD WARNING IS EXTENDED FOR THE FOLLOWING RIVERS IN IOWA...  
 
WINNEBAGO RIVER AT MASON CITY AFFECTING CERRO GORDO, FLOYD AND  
WORTH COUNTIES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
FOR THE LATEST STREAM OBSERVATIONS AND FORECASTS REFER TO  
WEATHER.GOV/DESMOINES/WATER.  
 
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD  
DEATHS OCCUR IN VEHICLES.  
 
RIVER FORECASTS INCLUDE OBSERVED PRECIPITATION PLUS FORECAST  
PRECIPITATION OVER THE NEXT 24 HOURS.  
 

 
 
IAC033-067-195-200015-  
/O.EXT.KDMX.FL.W.0018.000000T0000Z-250822T1500Z/  
/MCWI4.1.ER.250818T1739Z.250820T0000Z.250822T0900Z.NO/  
1109 PM CDT MON AUG 18 2025  
   
..FLOOD WARNING NOW IN EFFECT UNTIL LATE FRIDAY MORNING
 
 
* WHAT...MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.  
 
* WHERE...THE WINNEBAGO RIVER AT MASON CITY, OR FROM BEAVER CREEK  
NEAR FERTILE TO THE SHELL ROCK RIVER NEAR ROCKFORD.  
 
* WHEN...UNTIL LATE FRIDAY MORNING.  
 
* IMPACTS...AT 12.0 FEET, WIDESPREAD FLOODING OCCURS ALONG THE  
RIVER. SOME BACKWATER EFFECTS ARE POSSIBLE ALONG WILLOW CREEK  
BETWEEN DOWNTOWN MASON CITY AND THE CONFLUENCE WITH THE WINNEBAGO  
RIVER.  
 
* ADDITIONAL DETAILS...  
- AT 10:30 PM CDT MONDAY THE STAGE WAS 11.0 FEET.  
- FORECAST...THE RIVER IS EXPECTED TO RISE TO A CREST OF 12.3  
FEET TOMORROW EVENING. IT WILL THEN FALL BELOW FLOOD STAGE  
EARLY FRIDAY MORNING.  
- FLOOD STAGE IS 10.0 FEET.  
 

 
 
LAT...LON 4331 9330 4308 9287 4300 9301 4326 9350  
 

 
 
DONAVON  
 
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