

000 

WGUS73 KFSD 250802

FFSFSD



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

259 AM CDT MON JUL 25 2005



IAC119-141-143-167-MNC133-250830-

OSCEOLA IA-LYON IA-SIOUX IA-OBRIEN IA-ROCK MN-

259 AM CDT MON JUL 25 2005



...A FLASH FLOOD WARNING CONTINUES UNTIL 330 AM CDT FOR SOUTHERN 

ROCK...OBRIEN...SIOUX...LYON AND OSCEOLA COUNTIES...



AT 253 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

INDICATE AN THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED

AREA.



RADAR ESTIMATES THAT 2 TO 5 INCHES OF RAIN HAS FALLEN SINCE SUNDAY 

EVENING ACROSS A LARGE PORTION OF THE WARNED AREA. MORE 

THUNDERSTORMS CONTINUE TO DEVELOP WEST OF THIS AREA...AND ARE MOVING 

TO THE EAST. ADDITIONAL RAINFALL AMOUNTS OF UP TO ONE INCH ARE 

POSSIBLE IN THE WARNED AREA THROUGH 330 AM CDT.



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.



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.



FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE 

YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS. CAMPERS AND HIKERS 

SHOULD AVOID STREAMS OR CREEKS.



LAT...LON 4359 9643 4295 9645 4296 9546 4337 9544



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MG

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