

000 

WGUS73 KFSD 221440

FFSFSD



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

933 AM CDT WED AUG 22 2007



IAC035-149-193-221715-

CHEROKEE IA-PLYMOUTH IA-WOODBURY IA-

933 AM CDT WED AUG 22 2007



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR

WOODBURY...SOUTHERN PLYMOUTH AND CHEROKEE COUNTIES...



AT 926 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 

INDICATE A LINE OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE 

WARNED AREA. THE STRONGEST STORMS WERE LOCATED FROM NEAR WATERBURY 

TO SALIX TO CORRECTIONVILLE AND WERE MOVING EAST AT AROUND 25 MPH.



RAINFALL RATES OF 2 TO 3 INCHES PER HOUR CAN BE EXPECTED WITH THE 

STRONGEST STORMS. ALMOST 2 INCHES OF RAIN FELL IN ABOUT 45 MINUTES 

EARLIER IN THE SOUTHERN SIOUX CITY METRO AREA. SOME OF THE MORE 

URBAN AREAS THAT WILL HAVE THE GREATEST THREAT OF FLASH FLOODING 

THROUGH 1100 AM ARE THE SOUTHERN PORTIONS OF THE SIOUX CITY METRO 

AREA...MOVILLE...KINGSLEY...CORRECTIONVILLE....AND WASHTA. AREA 

CREEKS THAT COULD ALSO SEE FLASH FLOODING ARE BIG WHISKEY CREEK... 

ELLIOT CREEK...MUD CREEK...MCELHANEY CREEK...PIERSON CREEK...WILLOW 

CREEK...AND STRATTON CREEK.



EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL

CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY

ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW

LYING AREAS ARE SUBJECT TO FLOODING.



MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO

AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY

DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL

ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED

ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.



LAT...LON 4225 9626 4222 9567 4252 9575 4257 9587

      4258 9541 4291 9541 4264 9653



$$



MG

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