

954 

RWUS32 KDSM 050224

FFSDSM

IAZ044>050-057>062-070>075-081>086-092>097-050300-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DES MOINES IA

924 PM CDT MON JUN 4 2001



WATCH INFORMATION-- A FLASH FLOOD WATCH REMAINS IN EFFECT OVERNIGHT 

AND TUESDAY MORNING BASICALLY FROM HIGHWAY 30 SOUTH TO THE MISSOURI 

BORDER.



SOME CITIES INCLUDED IN THE WATCH ARE AMES...ATLANTIC...CARROLL...

CENTERVILLE...CHARITON...CRESTON...DENISON...DES MOINES...GRINNELL...

KNOXVILLE...LAMONI...MARSHALLTOWN...OSKALOOSA...AND OTTUMWA.



FORECAST RAINFALL-- SHOWERS AND THUNDERSTORMS ARE EXPECTED TO EXPAND 

ACROSS IOWA OVERNIGHT WITH THE GREATEST POTENTIAL FOR FLOODING ALONG 

AND SOUTH OF HIGHWAY 30.  WIDESPREAD RAINS OF 1 TO 2 INCHES MAY 

OCCUR...WITH ISOLATED AMOUNTS UP TO 3 INCHES.



METEOROLOGICAL COMMENTS-- LOW PRESSURE FROM TEXAS INTO KANSAS THIS 

EVENING WILL MOVE ONLY SLOWLY EASTWARD OVERNIGHT.  VERY WARM AND 

MOIST AIR SHOULD CONTINUE TO BE TRANSPORTED NORTHWARD INTO THE LOWER 

MISSOURI RIVER VALLEY THROUGH THE EARLY MORNING HOURS BY STRONG 

SOUTHERLY WINDS JUST ABOVE THE SURFACE.  WITH LITTLE OVERALL 

MOVEMENT IN THE WEATHER PATTERN ANTICIPATED...THE SAME LOCATIONS IN 

CENTRAL AND SOUTHERN IOWA WILL BE FAVORED FOR THUNDERSTORM 

DEVELOPMENT.  WITH PLENTY OF MOISTURE IN PLACE...HEAVY RAINS ARE 

LIKELY WHICH COULD PRODUCE FLASH FLOODING.



PRECAUTIONS-- A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL 

STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE. PEOPLE IN THE 

WATCH AREA SHOULD KEEP AN EYE ON THE WEATHER...AND BE PREPARED FOR 

IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH 

FLOOD WARNING BE ISSUED.

$$



SMALL



914 

RWUS32 KDSM 050317 CCA

FFSDSM

IAZ044>050-057>062-070>075-081>086-092>097-050900-



FLASH FLOOD STATEMENT...CORRECTED FOR CODING

NATIONAL WEATHER SERVICE DES MOINES IA

924 PM CDT MON JUN 4 2001



WATCH INFORMATION-- A FLASH FLOOD WATCH REMAINS IN EFFECT OVERNIGHT 

AND TUESDAY MORNING BASICALLY FROM HIGHWAY 30 SOUTH TO THE MISSOURI 

BORDER.



SOME CITIES INCLUDED IN THE WATCH ARE AMES...ATLANTIC...CARROLL...

CENTERVILLE...CHARITON...CRESTON...DENISON...DES MOINES...GRINNELL...

KNOXVILLE...LAMONI...MARSHALLTOWN...OSKALOOSA...AND OTTUMWA.



FORECAST RAINFALL-- SHOWERS AND THUNDERSTORMS ARE EXPECTED TO EXPAND 

ACROSS IOWA OVERNIGHT WITH THE GREATEST POTENTIAL FOR FLOODING ALONG 

AND SOUTH OF HIGHWAY 30.  WIDESPREAD RAINS OF 1 TO 2 INCHES MAY 

OCCUR...WITH ISOLATED AMOUNTS UP TO 3 INCHES.



METEOROLOGICAL COMMENTS-- LOW PRESSURE FROM TEXAS INTO KANSAS THIS 

EVENING WILL MOVE ONLY SLOWLY EASTWARD OVERNIGHT.  VERY WARM AND 

MOIST AIR SHOULD CONTINUE TO BE TRANSPORTED NORTHWARD INTO THE LOWER 

MISSOURI RIVER VALLEY THROUGH THE EARLY MORNING HOURS BY STRONG 

SOUTHERLY WINDS JUST ABOVE THE SURFACE.  WITH LITTLE OVERALL 

MOVEMENT IN THE WEATHER PATTERN ANTICIPATED...THE SAME LOCATIONS IN 

CENTRAL AND SOUTHERN IOWA WILL BE FAVORED FOR THUNDERSTORM 

DEVELOPMENT.  WITH PLENTY OF MOISTURE IN PLACE...HEAVY RAINS ARE 

LIKELY WHICH COULD PRODUCE FLASH FLOODING.



PRECAUTIONS-- A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL 

STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE. PEOPLE IN THE 

WATCH AREA SHOULD KEEP AN EYE ON THE WEATHER...AND BE PREPARED FOR 

IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH 

FLOOD WARNING BE ISSUED.

$$



SMALL

