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000 

RWUS32 KDSM 181034

FFSDSM

IAZ017-181300-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DES MOINES IA

525 AM CDT TUE JUN 18 2002



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

AM...



AT 525 AM...RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN OVER 

MUCH OF CENTRAL AND EASTERN CERRO GORDO COUNTY...MAINLY ALONG AND 

EAST OF INTERSTATE 35. THIS AREA OF PRECIPITATION CONTINUED TO 

REDEVELOP AND HOLD NEAR STATIONARY.



ADDITIONAL MODERATE TO LOCALLY HEAVY RAIN WILL OCCUR THROUGH 7 AM 

OVER AREAS FROM SWALEDALE TO ROCKWELL. LIGHTER AMOUNTS WILL OCCUR 

NORTH OF MASON CITY. RAINFALL AMOUNTS OF TWO TO FOUR INCHES OCCURRED 

FROM JUST SOUTHEAST OF CLEAR LAKE TO FAR NORTHWEST PORTIONS OF THE 

COUNTY.  



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. 



OVER EASTERN CERRO GORDO COUNTY...MUCH LESS RAINFALL HAS FALLEN AND 

THE THREAT OF FLASH FLOODING IS LOWER. MOTORISTS SHOULD STILL BE 

ALERT TO THE POSSIBILITY OF PONDING OF WATER ON ROADS BETWEEN 

ROCKWELL AND MASON CITY.



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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