

000 

WGUS73 KFSD 201434

FFSFSD



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

931 AM CDT MON AUG 20 2007



IAC059-201530-

DICKINSON IA-

931 AM CDT MON AUG 20 2007



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT FOR

DICKINSON COUNTY...



AT 926 AM CDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED FLASH 

FLOODING IN SPIRIT LAKE. SOME STREETS ARE FLOODED WITH THE WATER 

GOING OVER THE CURBS. THE LINE OF THUNDERSTORMS EXTENDED FROM 

NORTHEAST TO SOUTHWEST ACROSS DICKINSON COUNTY...AND IS MOVING EAST 

AT AROUND 35 MPH. ADDITIONAL RAINFALL OF AROUND ONE HALF INCH IS 

EXPECTED THROUGH 1000 AM...BUT RUNOFF AND FLOODING FROM THE PREVIOUS 

HEAVY RAINS WILL CONTINUE THROUGH 1030.



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 4326 9538 4325 9494 4349 9494 4349 9539



$$



MG



000 

WGUS73 KFSD 201434

FFSFSD



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

931 AM CDT MON AUG 20 2007



IAC059-201530-

DICKINSON IA-

931 AM CDT MON AUG 20 2007



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT FOR

DICKINSON COUNTY...



AT 926 AM CDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED FLASH 

FLOODING IN SPIRIT LAKE. SOME STREETS ARE FLOODED WITH THE WATER 

GOING OVER THE CURBS. THE LINE OF THUNDERSTORMS EXTENDED FROM 

NORTHEAST TO SOUTHWEST ACROSS DICKINSON COUNTY...AND IS MOVING EAST 

AT AROUND 35 MPH. ADDITIONAL RAINFALL OF AROUND ONE HALF INCH IS 

EXPECTED THROUGH 1000 AM...BUT RUNOFF AND FLOODING FROM THE PREVIOUS 

HEAVY RAINS WILL CONTINUE THROUGH 1030.



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 4326 9538 4325 9494 4349 9494 4349 9539



$$



MG

