Straight from Accuweather...
URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER
SERVICE QUAD CITIES IA IL
407 AM CDT SUN MAY 6 2012
...THUNDERSTORMS
WITH HEAVY RAINS THIS AFTERNOON AND TONIGHT...
.A COLD FRONT WILL BE
ADVANCING ACROSS IOWA WITH NUMEROUS
THUNDERSTORMS DEVELOPING AHEAD OF THE
FRONT...ESPECIALLY THIS
AFTERNOON INTO TONIGHT. THE AIRMASS WILL BE VERY
UNSTABLE AND
WITH A HIGH MOISTURE CONTENT. THE STORMS WILL BE CAPABLE OF
PRODUCING AT LEAST 1 TO 2 INCHES OF RAIN IN A SHORT PERIOD OF TIME
WHICH
MAY LEAD TO FLASH FLOODING. THE RISK OF FLASH FLOODING WILL
BE THE HIGHEST
WHERE RECENT HEAVY RAINS HAVE SATURATED SOILS.
REPEATED ROUNDS OF STORMS MAY
ALSO CAUSE RAPID RISES ON SOME
TRIBUTARY RIVERS AND POSSIBLE RIVER FLOODING.
...FLASH FLOOD WATCH IN EFFECT FROM 2 PM CDT THIS AFTERNOON
THROUGH LATE
TONIGHT...
THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A
* FLASH FLOOD WATCH FOR PORTIONS OF ILLINOIS...IOWA AND
NORTHEAST
MISSOURI...INCLUDING THE FOLLOWING AREAS...IN
ILLINOIS...BUREAU...CARROLL...HANCOCK...HENDERSON...HENRY IL...
JO
DAVIESS...MCDONOUGH...MERCER...PUTNAM...ROCK ISLAND...
STEPHENSON...WARREN
AND WHITESIDE. IN IOWA...BENTON...
BUCHANAN...CEDAR...CLINTON...DELAWARE...DES MOINES...DUBUQUE...
HENRY
IA...IOWA...JACKSON...JEFFERSON...JOHNSON...JONES...
KEOKUK...LEE...LINN...LOUISA...MUSCATINE...SCOTT...VAN BUREN
AND
WASHINGTON. IN NORTHEAST MISSOURI...CLARK AND SCOTLAND.
* FROM 2 PM CDT
THIS AFTERNOON THROUGH LATE TONIGHT
* NUMEROUS THUNDERSTORMS EXPECTED TO
DEVELOP THIS AFTERNOON AND
CONTINUE INTO TONIGHT AS A COLD FRONT MOVES
SLOWLY ACROSS THE
REGION. THESE STORMS COULD PRODUCE AT LEAST 1 TO 2 INCH
PER HOUR
RAINFALL RATES...AND WITH SATURATED SOILS FROM PREVIOUS HEAVY
RAINS MAY CAUSE FLASH FLOODING.
* PERSISTENT OR REPEATING
THUNDERSTORMS DUMPING HEAVY RAINS MAY
ALSO CAUSE RAPID RISES ON SOME
TRIBUTARY RIVERS AND POSSIBLE
RIVER FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WATCH MEANS
THAT FLASH FLOODING IS POSSIBLE.
MONITOR FORECASTS AND TAKE ACTION IF FLASH
FLOOD WARNINGS ARE
ISSUED OR FLASH FLOODING DEVELOPS.