

263 

RWUS32 KDSM 111610

FFSDSM

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-

092>097-112100-



FLOOD STATEMENT

NATIONAL WEATHER SERVICE DES MOINES IA

1110 AM CDT WED APR 11 2001



WATCH INFORMATION-- A FLOOD WATCH REMAINS IN EFFECT UNTIL 400 PM CDT 

TODAY FOR THE ENTIRE DES MOINES NATIONAL WEATHER SERVICE FORECAST 

AREA. 



SOME CITIES IN THE WATCH INCLUDE

ALGONA...AMES...ATLANTIC...CARROLL...CENTERVILLE...CHARITON...

CRESTON...DENISON...DES MOINES...ESTHERVILLE...FORT DODGE... 

GRINNELL...INDIANOLA...IOWA FALLS...KNOXVILLE...LAMONI... 

MARSHALLTOWN...MASON CITY...NEWTON...OSKALOOSA...OTTUMWA... 

PELLA...PERRY...WATERLOO...AND WEBSTER CITY.



RECENT REPORTS-- OBSERVED PRECIPITATION THROUGH EARLY THIS MORNING 

INDICATE THAT A NARROW SWATH OF 1 TO 2 INCHES OF RAIN FELL FROM JUST 

SOUTHWEST OF ATLANTIC...EAST TO INDIANOLA TUESDAY EVENING. MOST OF 

THE REST OF THE STATE RECEIVED FROM ONE QUARTER TO ONE INCH OF RAIN 

OVERNIGHT.  RADAR RAINFALL ESTIMATES FROM THIS MORNING INDICATE THAT 

LESS THAN ONE QUARTER INCH OF ADDITIONAL PRECIPITATION OCCURRED.  

THE EXCEPTION IS IN A NARROB BAND FROM NEAR SHENANDOAH TO SOUTHWEST 

OF FORT DODGE...WHERE ONE HALF TO ONE INCH HAS FALLEN.



FORECAST RAINFALL-- SHOWERS AND THUNDERSTORMS ARE FORECAST TO 

PRODUCE 1 TO 2 INCHES OF RAINFALL ACROSS PORTIONS OF THE FORECAST 

AREA TODAY WITH THE GREATEST POTENTIAL ACROSS THE SOUTHERN TWO 

THIRDS OF THE DES MOINES NATIONAL WEATHER SERVICE FORECAST AREA. 

LOCALLY HIGHER AMOUNTS ARE POSSIBLE WITH THE HEAVIEST CONVECTION.



METEOROLOGICAL COMMENTS-- A WARM FRONT EXTENDS FROM NEAR OMAHA 

NORTHEAST TO NORTH OF WATERLOO.  AREAS OF SHOWERS AND THUNDERSTORMS 

CONTINUE ALONG THE WARM FRONT WITH BOTH THE FRONT AND RAIN LIFTING 

NORTH THIS AFTERNOON.  A DRY LINE EXTENDS FROM SOUTHN CENTRAL 

NEBRASKA INTO EAST CENTRAL KANSAS.  IT WILL LIFT NORTHEAST THIS 

AFTERNOON...REACHING CENTRAL IOWA BY MID AFTERNOON.  INTENSE 

THUNDERSTORMS WILL DEVELOP ALONG THIS LINE AS IT MOVES ACROSS THE 

STATE.  



PRECAUTIONS-- A FLOOD WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR 

HEAVY RAIN ACROSS THE WATCH AREA...WHICH MAY LEAD TO FLOODING ALONG 

AREA RIVERS. IF YOU ARE IN THE WATCH AREA...CHECK YOUR PREPAREDNESS 

REQUIREMENTS...ESPECIALLY IF YOU HAVE INTERESTS ALONG AREA RIVERS. 

KEEP INFORMED...AND BE READY FOR ACTION IF FLOODING IS OBSERVED OR IF

A FLOOD WARNING IS ISSUED.

$$

MS APR 01

