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000 

RWUS32 KDSM 180857

FFSDSM

IAZ017-181300-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DES MOINES IA

339 AM CDT TUE JUN 18 2002



...A FLASH FLOOD WARNING CONTINUES FOR CERRO GORDO COUNTY UNTIL 800 

AM...



AT 345 AM...RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN OVER 

CERRO GORDO COUNTY...MAINLY ALONG AND EAST OF INTERSTATE 35. THIS 

AREA OF PRECIPITATION WAS HOLDING NEAR STATIONARY.



ADDITIONAL MODERATE TO HEAVY RAIN WILL OCCUR THROUGH 5 AM OVER AREAS 

FROM MASON CITY TO ROCKWELL. RADAR ESTIMATES INDICATE THAT THE 

HEAVIEST RAIN HAS FALLEN FROM NEAR CLEAR LAKE AND VENTURA UP THROUGH 

FOREST CITY AND FERTILE. THREE TO SIX INCHES WAS POSSIBLE IN SOME OF 

THESE AREAS. 



ALTHOUGH THE RAINFALL HAS ENDED IN NORTHWEST PORTIONS OF THE 

COUNTY...ADDITIONAL HEAVY RUNOFF WILL LIKELY CONTINUE FOR THE NEXT 

FEW HOURS. FLASH FLOODING IS LIKELY ALONG THE WILLOW CREEK AND 

BEAVER DAM CREEK. OTHER CREEKS...DRAINAGE AREAS...AND DITCHES WILL 

LIKELY OVERFLOW. SOME ROADS...ESPECIALLY OVER NORTHWEST PORTIONS OF 

CERRO GORDO COUNTY WILL LIKELY BE UNDER WATER. 



FLASH FLOODS OCCUR QUICKLY...MOVE TO HIGHER GROUND. NEVER DRIVE

THROUGH WATER OF UNKNOWN DEPTH...THE ROAD SURFACE MAY BE WASHED OUT.

LESS THAN ONE FOOT OF FAST FLOWING WATER CAN SWEEP AN AUTOMOBILE OFF

THE ROAD.



LAT...LON 4292 9348 4292 9304 4325 9305 4324 9350



JAW

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