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RWUS32 KDSM 021456

FFSDSM

IAZ023-034-035-021700-



URBAN AND SMALL STREAM FLOOD ADVISORY

NATIONAL WEATHER SERVICE DES MOINES IA

955 AM CDT THU AUG 2 2001



ADVISORY INFORMATION-- THE NATIONAL WEATHER SERVICE HAS ISSUED AN 

URBAN AND SMALL STREAM FLOOD ADVISORY FOR WEBSTER...POCAHONTAS AND 

CALHOUN COUNTIES UNTIL NOON.



FORECAST RAINFALL-- THUNDERSTORMS ACROSS CALHOUN AND POCAHONTAS 

COUNTIES ARE EXPECTED TO MOVE INTO WEBSTER COUNTY LATER THIS 

MORNING.  THE STORMS HAVE BEEN PRODUCING RAINFALL RATES OF 1 TO 2 

INCHES PER HOUR OR MORE.  THE HIGHEST AMOUNTS WILL LIKELY OCCUR 

ALONG THE CALHOUN AND POCAHONTAS COUNTY LINE INTO CENTRAL WEBSTER 

COUNTY.  THIS MAY CAUSE PONDING OF WATER ON AREA ROADS...AND RAPID 

RISES IN SMALL STEAMS AND CREEKS.  URBAN FLOODING MAY OCCUR AS 

WELL...WITH LARGER CITIES SUCH AS FORT DODGE MORE SUSCEPTIBLE.



RECENT REPORTS-- A FEW PORTIONS OF POCAHONTAS AND CALHOUN COUNTIES 

HAVE ALREADY RECEIVED OVER 3 INCHES OF RAIN OVERNIGHT.  ALTHOUGH NOT 

WIDESPREAD...THE GROUND IS ALREADY SATURATED LOCALLY AND MAY PRODUCE 

RUNOFF AND RISES IN SMALL STREAMS AND CREEKS.



PRECAUTIONS-- BE PREPARED FOR STANDING WATER ON ROADS AND HIGHWAYS. 

STAY AWAY FROM SMALL STREAMS AND CREEKS WHICH MAY FILL WITH WATER 

QUICKLY.

$$



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