637  
WGUS43 KFSD 211506  
FLWFSD  
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
FLOOD WARNING  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
1006 AM CDT SAT APR 21 2018  
 
...FORECAST FLOODING CHANGED FROM MINOR TO MODERATE SEVERITY FOR THE  
FOLLOWING RIVERS IN SOUTH DAKOTA...  
JAMES RIVER ABOVE YANKTON  
 
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH  
TONIGHT. ANY ADDITIONAL FUTURE RAINS COULD AFFECT THE CREST  
FORECASTS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SAFETY MESSAGE...DO NOT DRIVE CARS THROUGH FLOODED AREAS. THE WATER  
DEPTH AND ROAD CONDITION MAY BE UNSAFE.  
 
ADDITIONAL INFORMATION IS AVAILABLE AT  
 
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=FSD  
 
STAY TUNED FOR FURTHER UPDATES BY LISTENING TO NOAA WEATHER RADIO...  
OR YOUR LOCAL RADIO AND TV STATIONS.  
 
THE NEXT SCHEDULED STATEMENT WILL BE ISSUED TOMORROW MORNING.  
 

 
 
SDC135-221905-  
/O.EXT.KFSD.FL.W.0061.180425T0430Z-000000T0000Z/  
/YNNS2.2.ER.180425T0430Z.180428T1200Z.000000T0000Z.NO/  
1006 AM CDT SAT APR 21 2018  
   
..FORECAST FLOODING INCREASED FROM MINOR TO MODERATE SEVERITY
 
 
THE FLOOD WARNING CONTINUES FOR  
THE JAMES RIVER ABOVE YANKTON.  
* FROM TUESDAY EVENING UNTIL FURTHER NOTICE.  
* AT 9 AM SATURDAY THE STAGE WAS 8.5 FEET.  
* MODERATE FLOODING IS FORECAST.  
* FLOOD STAGE IS 12.0 FEET.  
* FORECAST...RISE ABOVE FLOOD STAGE BY 11 PM TUESDAY AND CONTINUE  
TO RISE TO NEAR 14.2 FEET BY 7 AM SATURDAY. ADDITIONAL RISES  
ARE POSSIBLE THEREAFTER.  
 

 
 
LAT...LON 4308 9750 4308 9736 4298 9731 4287 9722  
4287 9737 4298 9741  
 

 
 

 
LOCATION FLOOD LATEST OBSERVED MAXIMUM FORECAST  
STAGE STAGE TIME STAGE TIME  
 
JAMES RIVER  
YNNS2 12.0 8.53 SAT 10 AM 14.2 SAT 7 AM  
 
TRM  
 
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