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816 

RWUS32 KFSD 210601

FFSFSD

IAZ020-031-210615-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

1253 AM CDT SAT APR 21 2001



...FLASH FLOOD WARNING ALLOWED TO EXPIRE FOR...



...SOUTHERN PLYMOUTH COUNTY IN NORTHWEST IOWA...

...NORTHERN WOODBURY COUNTY IN NORTHWEST IOWA...



THE THUNDERSTORMS THAT MOVED THROUGH THE AREA EARLIER PRODUCED HEAVY 

RAINS OF 1 TO 3 INCHES. THESES RAINS CAUSED WIDESPREAD STREET 

FLOODING IN SIOUX CITY STALLING CARS...AND SEVERAL HOMES HAD WATER 

FLOODING THE BASEMENTS IN THE MORNINGSIDE AREA. ALL PRECIPITATION 

HAS MOVED QUICKLY NORTHEAST OUT OF THE AREA. STORM SEWERS... 

STREAMS...AND CREEKS IN THE AREA SHOULD SEE WATER LEVELS RECEDING 

QUICKLY THROUGH 200 AM. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN 

ALLOWED TO EXPIRE AT 100 AM.



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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

MOVE TO HIGHER GROUND.

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