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000 

WGUS53 KDMX 052354

FFWDMX

IAC033-060345-



BULLETIN - EAS ACTIVATION REQUESTED

FLASH FLOOD WARNING

NATIONAL WEATHER SERVICE DES MOINES IA

654 PM CDT MON JUL 5 2004



THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A



* FLASH FLOOD WARNING FOR...

  CERRO GORDO COUNTY IN NORTH CENTRAL IOWA

  THIS INCLUDES THE CITY OF MASON CITY



* UNTIL 1045 PM CDT



* AT 645 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED

  THUNDERSTORMS WITH FLASH FLOOD PRODUCING RAINS APPROACHING THE

  WARNING AREA FROM THE SOUTH AND EAST.



* SHOWERS AND THUNDERSTORMS ARE CONTINUOUSLY REDEVELOPING OVER THE

  WARNING AREA...RESULTING IN EXCESSIVE RAINFALL.  NATIONAL WEATHER 

  SERVICE DOPPLER RADAR ESTIMATES...CORROBORATED BY SPOTTER 

  REPORTS...INDICATED THAT ANYWHERE FROM 2 TO 3.5 INCHES OF RAIN HAS 

  ALREADY FALLEN IN WESTERN AND NORTHERN PORTIONS OF THE COUNTY.



  THESE AMOUNTS WILL BE ADDED TO WITH RAINFALL RATES LOCALLY

  EXCEEDING 2 INCHES PER HOUR.  THIS WILL LIKELY PRODUCE FLASH

  FLOODING ALONG SPRING CREEK...WHARAM CREEK...CALMUS CREEK...

  WILLOW CREEK AND OTHER TRIBUTARIES IN THE WINNEBAGO RIVER BASIN.



OTHER WARNING LOCATIONS INCLUDE...

CLEAR LAKE...MASON CITY...PLYMOUTH...ROCK FALLS...ROCKWELL...

SWALEDALE...THORNTON AND VENTURA.



FLASH FLOODS OCCUR QUICKLY...MOVE TO HIGHER GROUND. AVOID WATER

COVERED ROADS...THE ROAD MAY BE WASHED OUT. LESS THAN ONE FOOT OF

FAST FLOWING WATER CAN SWEEP AN AUTOMOBILE OFF THE ROAD.



LAT...LON 4325 9305 4293 9304 4292 9350 4325 9351



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