

000 

WGUS53 KFSD 220755

FFWFSD

IAC021-035-221200-



BULLETIN - EAS ACTIVATION REQUESTED

FLASH FLOOD WARNING

NATIONAL WEATHER SERVICE SIOUX FALLS SD

252 AM CDT THU AUG 22 2002



THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A



* FLASH FLOOD WARNING FOR...

  CHEROKEE COUNTY IN NORTHWEST IOWA

  BUENA VISTA COUNTY IN NORTHWEST IOWA



* UNTIL 700 AM CDT



* AT 252 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED

  THUNDERSTORMS WERE PRODUCING VERY HEAVY RAINFALL OVER THE WARNED

  AREA.



THESE STORMS HAVE CONTINUED TO REDEVELOP OVER THIS AREA SINCE 

SHORTLY AFTER MIDNIGHT...AND DOPPLER RADAR IS NOW ESTIMATING A 

WIDESRPEAD 1 TO 3 INCHES IN THIS AREA BETWEEN MIDNIGHT AND 3 AM. 

THERE IS A STRONG LIKELIHOOD THAT THESE STORMS WILL CONTINUE TO 

REDEVELOP OVER THE SAME AREAS THROUGH THE PRE DAWN HOURS.



BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 

DANGERS OF FLOODS AND FLASH FLOODS. 



EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL

CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES

AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.



LAT...LON 4286 9498 4260 9493 4264 9575 4286 9575

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