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URBAN AND SMALL STREAM FLOOD ADVISORY

NATIONAL WEATHER SERVICE SIOUX FALLS SD

310 PM CDT SUN APR 22 2001



THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A URBAN AND 

SMALL STREAM FLOOD ADVISORY EFFECTIVE UNTIL 700 PM CDT SUNDAY 

EVENING FOR PEOPLE IN THE FOLLOWING COUNTIES



IN SOUTHEAST SOUTH DAKOTA

     CLAY...HANSON...MINNEHAHA...YANKTON...HUTCHINSON...BON HOMME...

     LINCOLN...MCCOOK AND TURNER



IN EAST CENTRAL SOUTH DAKOTA

     BROOKINGS...MINER...KINGSBURY...MOODY AND LAKE



IN SOUTH CENTRAL SOUTH DAKOTA

     SOUTHEAST CHARLES MIX



AT 310 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY

HEAVY RAIN OVER A LARGE PART OF SOUTHEAST AND EASTCENTRAL SOUTH 

DAKOTA. RAINFALL AMOUNTS OF 1 TO 3 INCHES HAVE ALREADY OCCURRED OVER 

THESE AREAS. ADDITIONAL SHOWERS AND THUNDERSTORMS CONTINUE TO 

DEVELOP OVER SOUTHEAST AND EASTCENTRAL SOUTH DAKOTA...AND ARE MOVING 

NORTHEAST AT 40 MPH. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES 

ARE LIKELY OVER THESE AREAS THROUGH 7 PM.



EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS 

...STREAMS AND URBAN AREAS. DO NOT ATTEMPT TO CROSS FLOODED ROADS.

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