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195 

RWUS32 KDSM 211016

FFSDSM

IAZ039-211100-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DES MOINES IA

516 AM CDT SAT JUL 21 2001



ADVISORY INFORMATION-- AN URBAN AND SMALL STREAM FLOOD ADVISORY 

REMAINS IN EFFECT FOR BLACK HAWK COUNTY UNTIL 600 AM.



FORECAST RAINFALL-- SHOWERS AND THUNDERSTORMS HAVE DIMINISHED IN 

INTENSITY...BUT CAN STILL BE EXPECTED UNTIL AT LEAST 600 AM ACROSS 

THE NORTHEAST HALF OF BLACK HAWK COUNTY.  THIS WILL PRIMARILY AFFECT 

NORTHEASTERN PORTIONS OF CEDAR FALLS AND WATERLOO...AS WELL AS 

LOCATIONS NEAR DUNKERTON...DEWAR...AND JESUP.  RAINFALL RATES MAY 

EXCEED A HALF INCH TO AN INCH PER HOUR WITH THE STRONGER STORMS 

AGGRAVATING STREET FLOODING PROBLEMS THAT ALREADY EXIST...OR SLOWING 

WATER RECESSION.



RECENT REPORTS-- 1.56 INCHES OF RAIN HAS FALLEN SINCE MIDNIGHT AT 

THE WATERLOO AIRPORT WITH HIGHER AMOUNTS POSSIBLE TO THE NORTH AND 

EAST.  NATIONAL WEATHER SERVICE RADAR ESTIMATES INDICATE ISOLATED 

RAINS OVER 5 INCHES BETWEEN WATERLOO AND DUNKERTON.  UNOFFICIAL 

SPOTTER REPORTS INDICATE SIMILAR AMOUNTS WITH ELK RUN CREEK OVER 

BANKFULL.



THE BLACK HAWK COUNTY SHERIFF REPORTED CONSIDERABLE PONDING OF WATER 

AND STREET FLOODING AT 500 AM...BUT NO REPORTS OF WATER IN HOMES OR 

FLASH FLOODING WITH WASHED OUT ROADS.



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

DO NOT DRIVE YOUR VEHICLE THROUGH WATER COVERED ROADS AS IT MAY 

STALL LEAVING YOU STRANDED.  ALSO STAY AWAY FROM SMALL STREAMS AND 

CREEKS WHICH MAY FILL WITH WATER QUICKLY.

$$



SMALL

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