

000 

WGUS73 KFSD 172217

FFSFSD

IAC041-172315-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

516 PM CDT FRI SEP 17 2004



...A FLASH FLOOD WARNING CONTINUES UNTIL 615 PM CDT FOR CLAY COUNTY 

IN NORTHWEST IOWA...



AT 516 PM CDT...RAINFALL HAD ENDED OVER THE AREA...BUT RUNOFF AND 

STANDING WATER CONTINUE TO BE A PROBLEM. NATIONAL WEATHER SERVICE 

DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH 

FLOODING.  THIS STORM WAS LOCATED 4 MILES SOUTH OF SPENCER  THE 

THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY.



EXCESSIVE RUNOFF FROM 3 TO 4 INCHES OF RAIN THAT FELL LATE THIS 

MORNING AND EARLY THIS AFTERNOON WILL CAUSE FLOODING OF SMALL CREEKS 

AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS 

WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 

SAFELY.



LAT...LON 4325 9538 4294 9538 4293 9493 4325 9494



$$

WILLIAMS

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