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000 

WGUS73 KFSD 050709

FFSFSD



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

208 AM CDT SUN JUN 5 2005



IAC119-167-SDC083-127-050800-

LYON IA-SIOUX IA-LINCOLN SD-UNION SD-

208 AM CDT SUN JUN 5 2005



...A FLASH FLOOD WARNING CONTINUES UNTIL 300 AM CDT FOR UNION...

LINCOLN...SIOUX AND LYON COUNTIES...



AT 158 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED

THAT MOST OF THE HEAVY RAIN PRODUCING THUNDERSTORMS HAD MOVED NORTH 

INTO SOUTHWEST MINNESOTA. HOWEVER...ANOTHER CLUSTER OF SHOWERS AND 

THUNDERSTORMS FROM AKRON...TO VERMILLION...TO VIBORG IS EXPECTED TO 

MOVE NORTHEAST INTO THE AREA BETWEEN 200 AM AND 300 AM. 



LAW ENFORCEMENT IN SIOUX COUNTY REPORTED THAT MOST CREEKS AROUND 

ROCK VALLEY WERE BANKFULL OR NEAR BANKFULL AND STILL RISING. LOW 

LYING AREAS AROUND HAWARDEN WERE ALSO FLOODED.  AT 1210 AM...WATER 

WAS ALSO RUNNING OVER RIVER ROAD IN NORTHEAST UNION COUNTY...JUST 

SOUTH OF COUNTY ROAD 13.



EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 

CREEKS AND STREAMS...COUNTRY ROADS...POOR DRAINAGE URBAN AREAS...AS 

WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.



BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 

DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE 

UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS 

SUBJECT TO FLOODING WHEN WATER BEGINS RISING.



LAT...LON 4338 9684 4275 9679 4321 9600 4345 9604



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