Alert archive / Iowa / Flash Flood Watches in 2008

Flash Flood Watch 21, NWS Quad Cities, IA

December 26, 200819 counties in Iowa; 13 counties in Illinois; Clark County, Scotland County, Missouri

NWS Quad Cities, IA issued this flash flood watch at Dec 26, 2008, 10:59 AM CST for 19 counties in Iowa; 13 counties in Illinois; Clark County, Scotland County, Missouri. It took effect at Dec 26, 2008, 6:00 PM CST. It was in force for 19 hr.

The area

The counties it named.

The facts

Issued
Dec 26, 2008, 10:59 AM CST (16:59 UTC)
In effect from
Dec 26, 2008, 6:00 PM CST
Expired
Dec 27, 2008, 1:17 PM CST
In force
19 hr
Issued by
NWS Quad Cities, IA
Flood severity
None
All 34 counties

Benton County, IA, Cedar County, IA, Clinton County, IA, Des Moines County, IA, Dubuque County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Washington County, IA, Bureau County, IL, Carroll County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, McDonough County, IL, Mercer County, IL, Putnam County, IL, Rock Island County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL, Clark County, MO, Scotland County, MO

The radar

The Quad Cities radar (KDVN), 41 km from the middle of the area, began a volume at 16:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 5.0 hours before the alert went out and 47 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 2008-12-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2008-12-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 421 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
509 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
421 m²/s²
0-3 km storm-relative helicity
574 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS63 KDVN 261659
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1059 AM CST FRI DEC 26 2008

...FLASH FLOODING POSSIBLE...DUE TO HEAVY RAIN...ICE JAMS...AND
SNOW MELT...

.WARM MOIST AIR WILL CONTINUE TO SPREAD OVER THE REGION
TODAY...WITH SNOW MELTING THROUGH THE DAY SATURDAY.
CURRENTLY...MUCH OF EASTERN IOWA AND NORTHERN ILLINOIS CONTAINS
BETWEEN 1 AND 2 INCHES OF WATER IN FORM FORM OF SNOW ON THE
GROUND. A GOOD PORTION OF THIS SNOW WATER WILL MELT OFF DURING THE
NEXT 24 HOURS. RAIN WILL SPREAD OVER THE REGION TONIGHT...WITH
HEAVY RAIN AT TIMES THROUGH SATURDAY AFTERNOON...ALONG WITH
EMBEDDED THUNDERSTORMS. RAINFALL TOTALS OVER NORTHEAST
MISSOURI...EASTERN IOWA...AND ILLINOIS ARE EXPECTED TO RANGE FROM
1 TO 2 INCHES...WITH SOME LOCALLY HIGHER AMOUNTS WHERE
THUNDERSTORMS OCCUR. THE MELT WATER AND RAINFALL WILL RUN OFF INTO
AREA STREAMS AND RIVERS. THIS IS LIKELY TO PRODUCE FLOODING.
RAINFALL IN COMBINATION WITH ICE ON SOME RIVERS...WILL MAKE FLASH
FLOODING WITH RAPID RISES FROM ICE JAMS IS POSSIBLE. THE ROCK
RIVER IS MOST AT RISK FOR ICE JAM FLOODING. URBAN AREAS MAY ALSO
SEE FLASH FLOODING WHERE DRAINAGE OF SNOW MELT AND RAINFALL IS
SLOWED BY CLOGGED STORM SEWER SYSTEMS FULL OF ICE FROM RECENT STORMS.

IAZ054-066>068-078-088-089-098-099-ILZ001-002-007-009-015>018-
024>026-034-035-MOZ009-010-270100-
/O.NEW.KDVN.FF.A.0021.081227T0000Z-081228T0000Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON-CLINTON-MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-
VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-ROCK ISLAND-
HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-HANCOCK-MCDONOUGH-
SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...MUSCATINE...
BETTENDORF...DAVENPORT...WAPELLO...MOUNT PLEASANT...BURLINGTON...
KEOSAUQUA....FORT MADISON...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO...OQUAWKA...MONMOUTH...CARTHAGE...
MACOMB...MEMPHIS...KAHOKA
1059 AM CST FRI DEC 26 2008

...FLASH FLOOD WATCH IN EFFECT FROM 6 PM CST THIS EVENING THROUGH
SATURDAY AFTERNOON...

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...CLINTON...DES 
  MOINES...HENRY IA...JACKSON...LEE...LOUISA...MUSCATINE...SCOTT 
  AND VAN BUREN. IN NORTHEAST MISSOURI...CLARK AND SCOTLAND.

* FROM 6 PM CST THIS EVENING THROUGH SATURDAY AFTERNOON

* HEAVY RAINFALL OF 1 TO 2 INCHES IS EXPECTED TONIGHT THROUGH
  SATURDAY AFTERNOON...ALONG WITH SIGNIFICANT MELTING SNOW. RUN
  OFF FROM THE MELTING SNOW AND RAINFALL WILL LIKELY CAUSE
  FLOODING ON AREA STREAMS AND ILLINOIS TRIBUTARY RIVERS. ICE JAMS
  ARE POSSIBLE ON THE ROCK RIVER...RESULTING IN LOCALIZED FLASH
  FLOODING.

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.

$$


ERVIN
6 follow-up statements
000 
WGUS63 KDVN 262110
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
310 PM CST FRI DEC 26 2008

...FLASH FLOODING POSSIBLE...DUE TO HEAVY RAIN...ICE JAMS...AND
SNOW MELT...

.WARM MOIST AIR WILL CONTINUE TO SPREAD OVER THE REGION TODAY...
WITH SNOW MELTING THROUGH THE DAY SATURDAY. CURRENTLY...MUCH OF
EASTERN IOWA AND NORTHERN ILLINOIS CONTAINS BETWEEN 1 AND
2 INCHES OF WATER IN FORM OF SNOW AND ICE ON THE GROUND. A GOOD
PORTION OF THIS SNOW WATER WILL MELT OFF DURING THE NEXT 24 HOURS.
RAIN WILL SPREAD OVER THE REGION TONIGHT...WITH HEAVY RAIN AT
TIMES THROUGH SATURDAY AFTERNOON...ALONG WITH EMBEDDED
THUNDERSTORMS. RAINFALL TOTALS OVER NORTHEAST MISSOURI...EASTERN
IOWA...AND ILLINOIS ARE EXPECTED TO RANGE FROM 1 TO 2 INCHES...
WITH SOME LOCALLY HIGHER AMOUNTS WHERE THUNDERSTORMS OCCUR. THE
MELT WATER AND RAINFALL WILL RUN OFF INTO AREA STREAMS AND RIVERS.
THIS IS LIKELY TO PRODUCE FLOODING. RAINFALL IN COMBINATION WITH
ICE ON SOME RIVERS...WILL MAKE FLASH FLOODING WITH RAPID RISES
FROM ICE JAMS IS POSSIBLE. THE ROCK RIVER IS MOST AT RISK FOR ICE
JAM FLOODING. URBAN AREAS MAY ALSO SEE FLASH FLOODING WHERE
DRAINAGE OF SNOW MELT AND RAINFALL IS SLOWED BY CLOGGED STORM
SEWER SYSTEMS CLOGGED WITH ICE FROM RECENT STORMS.

IAZ054-066>068-078-088-089-098-099-ILZ001-002-007-009-015>018-
024>026-034-035-MOZ009-010-270515-
/O.CON.KDVN.FF.A.0021.081227T0000Z-081228T0000Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON-CLINTON-MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-
VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-ROCK ISLAND-
HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-HANCOCK-MCDONOUGH-
SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...MUSCATINE...
BETTENDORF...DAVENPORT...WAPELLO...MOUNT PLEASANT...BURLINGTON...
KEOSAUQUA....FORT MADISON...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO...OQUAWKA...MONMOUTH...CARTHAGE...
MACOMB...MEMPHIS...KAHOKA
310 PM CST FRI DEC 26 2008

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES 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...CLINTON...DES MOINES...HENRY IA...
  JACKSON...LEE...LOUISA...MUSCATINE...SCOTT AND VAN BUREN. IN 
  NORTHEAST MISSOURI...CLARK AND SCOTLAND.

* THROUGH SATURDAY AFTERNOON

* HEAVY RAINFALL OF 1 TO 2 INCHES IS EXPECTED TONIGHT THROUGH
  SATURDAY AFTERNOON...ALONG WITH SIGNIFICANT MELTING SNOW. RUN
  OFF FROM THE MELTING SNOW AND RAINFALL WILL LIKELY CAUSE
  FLOODING ON AREA STREAMS AND ILLINOIS TRIBUTARY RIVERS. ICE JAMS
  ARE POSSIBLE ON THE ROCK RIVER...RESULTING IN LOCALIZED FLASH
  FLOODING. URBAN FLASH FLOODING WILL ALSO BE POSSIBLE DUE TO
  HEAVY RAINFALL AND SNOW MELT.  


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.

$$


ERVIN
000 
WGUS63 KDVN 270143
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
743 PM CST FRI DEC 26 2008

...FLASH FLOODING POSSIBLE...DUE TO HEAVY RAIN...ICE JAMS...AND
SNOW MELT...

.WARM...MOIST AIR WILL CONTINUE TO OVERSPREAD THE REGION
TONIGHT... MELTING SNOW AND ICE. CURRENTLY...MUCH OF EASTERN IOWA
AND NORTHERN ILLINOIS CONTAINS BETWEEN 1 AND 2 INCHES OF WATER IN
FORM OF SNOW AND ICE ON THE GROUND. A GOOD PORTION OF THIS SNOW
WATER WILL MELT OFF DURING THE NEXT 24 HOURS. RAIN WILL SPREAD
OVER THE REGION LATER TONIGHT...WITH HEAVY RAIN AT TIMES THROUGH
SATURDAY AFTERNOON...ALONG WITH EMBEDDED THUNDERSTORMS. RAINFALL
TOTALS OVER NORTHEAST MISSOURI...EASTERN IOWA...AND ILLINOIS ARE
EXPECTED TO RANGE FROM 1 TO 2 INCHES... WITH SOME LOCALLY HIGHER
AMOUNTS WHERE THUNDERSTORMS OCCUR. THE MELT WATER AND RAINFALL
WILL RUN OFF INTO AREA STREAMS AND RIVERS. THIS IS LIKELY TO
PRODUCE FLOODING. RAINFALL IN COMBINATION WITH ICE ON SOME
RIVERS...WILL MAKE FLASH FLOODING WITH RAPID RISES FROM ICE JAMS
IS POSSIBLE. THE ROCK RIVER IS MOST AT RISK FOR ICE JAM FLOODING.
URBAN AREAS MAY ALSO SEE FLASH FLOODING WHERE DRAINAGE OF SNOW
MELT AND RAINFALL IS SLOWED BY CLOGGED STORM SEWER SYSTEMS CLOGGED
WITH ICE FROM RECENT STORMS.

IAZ054-066>068-078-088-089-098-099-ILZ001-002-007-009-015>018-
024>026-034-035-MOZ009-010-270945-
/O.CON.KDVN.FF.A.0021.000000T0000Z-081228T0000Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON-CLINTON-MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-
VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-ROCK ISLAND-
HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-HANCOCK-MCDONOUGH-
SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...MUSCATINE...
BETTENDORF...DAVENPORT...WAPELLO...MOUNT PLEASANT...BURLINGTON...
KEOSAUQUA....FORT MADISON...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO...OQUAWKA...MONMOUTH...CARTHAGE...
MACOMB...MEMPHIS...KAHOKA
743 PM CST FRI DEC 26 2008

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES 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...CLINTON...DES MOINES...HENRY IA...
  JACKSON...LEE...LOUISA...MUSCATINE...SCOTT AND VAN BUREN. IN 
  NORTHEAST MISSOURI...CLARK AND SCOTLAND.

* THROUGH SATURDAY AFTERNOON

* HEAVY RAINFALL OF 1 TO 2 INCHES IS EXPECTED TONIGHT THROUGH 
  SATURDAY AFTERNOON...ALONG WITH SIGNIFICANT MELTING SNOW. RUN 
  OFF FROM THE MELTING SNOW AND RAINFALL WILL LIKELY CAUSE 
  FLOODING ON AREA STREAMS AND ILLINOIS TRIBUTARY RIVERS. ICE 
  JAMS ARE POSSIBLE ON THE ROCK RIVER...RESULTING IN LOCALIZED 
  FLASH FLOODING. URBAN FLASH FLOODING WILL ALSO BE POSSIBLE DUE 
  TO HEAVY RAINFALL AND SNOW MELT. 

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.

$$
000 
WGUS63 KDVN 270344
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
944 PM CST FRI DEC 26 2008

...FLASH FLOODING POSSIBLE...DUE TO HEAVY RAIN...ICE JAMS...AND
SNOW MELT...

.WARM...MOIST AIR WILL CONTINUE TO OVERSPREAD THE REGION
TONIGHT... MELTING SNOW AND ICE. CURRENTLY...MUCH OF EASTERN IOWA
AND NORTHERN ILLINOIS CONTAINS BETWEEN 1 AND 2 INCHES OF WATER IN
FORM OF SNOW AND ICE ON THE GROUND. A GOOD PORTION OF THIS SNOW
WATER WILL MELT OFF DURING THE NEXT 24 HOURS. RAIN WILL SPREAD
OVER THE REGION LATER TONIGHT...WITH HEAVY RAIN AT TIMES THROUGH
SATURDAY AFTERNOON...ALONG WITH EMBEDDED THUNDERSTORMS. RAINFALL
TOTALS OVER NORTHEAST MISSOURI...EASTERN IOWA...AND ILLINOIS ARE
EXPECTED TO RANGE FROM 1 TO 2 INCHES... WITH SOME LOCALLY HIGHER
AMOUNTS WHERE THUNDERSTORMS OCCUR. THE MELT WATER AND RAINFALL
WILL RUN OFF INTO AREA STREAMS AND RIVERS. THIS IS LIKELY TO
PRODUCE FLOODING. RAINFALL IN COMBINATION WITH ICE ON SOME
RIVERS...WILL MAKE FLASH FLOODING WITH RAPID RISES FROM ICE JAMS
IS POSSIBLE. THE ROCK RIVER IS MOST AT RISK FOR ICE JAM FLOODING.
URBAN AREAS MAY ALSO SEE FLASH FLOODING WHERE DRAINAGE OF SNOW
MELT AND RAINFALL IS SLOWED BY CLOGGED STORM SEWER SYSTEMS
CLOGGED WITH ICE FROM RECENT STORMS.

IAZ042-051>053-063>065-076-077-087-271145-
/O.EXA.KDVN.FF.A.0021.000000T0000Z-081228T0000Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUBUQUE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-KEOKUK-WASHINGTON-
JEFFERSON-
INCLUDING THE CITIES OF...DUBUQUE...VINTON...CEDAR RAPIDS...
ANAMOSA...MARENGO...IOWA CITY...TIPTON...SIGOURNEY...WASHINGTON...
FAIRFIELD
944 PM CST FRI DEC 26 2008

...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE PORTIONS OF EAST CENTRAL IOWA...
  NORTHEAST IOWA AND SOUTHEAST IOWA...INCLUDING THE FOLLOWING 
  AREAS...IN EAST CENTRAL IOWA...BENTON...CEDAR...IOWA...
  JOHNSON...JONES AND LINN. IN NORTHEAST IOWA...DUBUQUE. IN 
  SOUTHEAST IOWA...JEFFERSON...KEOKUK AND WASHINGTON.

* THROUGH SATURDAY AFTERNOON

* HEAVY RAINFALL OF 0.5 TO 1 INCH IS EXPECTED TONIGHT THROUGH
  SATURDAY AFTERNOON...WITH LOCALLY HIGHER AMOUNTS POSSIBLE. RUN
  OFF FROM THE MELTING SNOW AND RAINFALL WILL LIKELY CAUSE
  FLOODING ON AREA STREAMS AND SIGNIFICANT RISES AND POSSIBLE
  FLOODING ON TRIBUTARY RIVERS. URBAN FLASH FLOODING WILL ALSO BE
  POSSIBLE DUE TO HEAVY RAINFALL AND SNOW MELT.

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.

$$

IAZ054-066>068-078-088-089-098-099-ILZ001-002-007-009-015>018-
024>026-034-035-MOZ009-010-271145-
/O.CON.KDVN.FF.A.0021.000000T0000Z-081228T0000Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON-CLINTON-MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-
VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-ROCK ISLAND-
HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-HANCOCK-MCDONOUGH-
SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...MUSCATINE...
BETTENDORF...DAVENPORT...WAPELLO...MOUNT PLEASANT...BURLINGTON...
KEOSAUQUA....FORT MADISON...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO...OQUAWKA...MONMOUTH...CARTHAGE...
MACOMB...MEMPHIS...KAHOKA
944 PM CST FRI DEC 26 2008

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES 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...CLINTON...DES MOINES...HENRY IA...
  JACKSON...LEE...LOUISA...MUSCATINE...SCOTT AND VAN BUREN. IN 
  NORTHEAST MISSOURI...CLARK AND SCOTLAND.

* THROUGH SATURDAY AFTERNOON

* HEAVY RAINFALL OF 1 TO 2 INCHES IS EXPECTED TONIGHT THROUGH
  SATURDAY AFTERNOON...ALONG WITH SIGNIFICANT MELTING SNOW. RUN
  OFF FROM THE MELTING SNOW AND RAINFALL WILL LIKELY CAUSE
  FLOODING ON AREA STREAMS AND ILLINOIS TRIBUTARY RIVERS. ICE JAMS
  ARE POSSIBLE ON THE ROCK RIVER...RESULTING IN LOCALIZED FLASH
  FLOODING. URBAN FLASH FLOODING WILL ALSO BE POSSIBLE DUE TO
  HEAVY RAINFALL AND SNOW MELT.

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.

$$
000 
WGUS63 KDVN 270925
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
325 AM CST SAT DEC 27 2008

...FLASH FLOODING THREAT CONTINUES TODAY DUE TO HEAVY RAIN...ICE
JAMS...AND SNOW MELT...

.WARM...MOIST AIR WILL CONTINUE TO OVERSPREAD THE REGION
TODAY... MELTING MUCH OF THE REMAINING SNOW AND ICE. A LARGE
PORTION OF THE SNOW AND ICE HAS ALREADY MELTED AND IS PRODUCING
RUN OFF. ROUNDS OF SHOWERS AND THUNDERSTORMS HAVE ALREADY
IMPACTED SOUTHEAST IOWA...NORTHEAST MISSOURI AN WESTERN ILLINOIS
OVERNIGHT...AND WILL CONTINUE TODAY AS A STRONG STORM SYSTEM MOVES
UP TOWARD THE AREA OUT OF THE SOUTHERN PLAINS. THE RAIN WILL BE
HEAVY AT TIMES THROUGH THIS AFTERNOON...WITH RAINFALL TOTALS OVER
NORTHEAST MISSOURI...EASTERN IOWA...AND ILLINOIS ARE EXPECTED TO
RANGE FROM 1 TO 2 INCHES... WITH SOME LOCALLY HIGHER AMOUNTS WHERE
THUNDERSTORMS OCCUR. THE MELT WATER AND RAINFALL WILL CONTINUE TO RUN
OFF INTO AREA STREAMS AND RIVERS. THIS IS LIKELY TO PRODUCE
FLOODING. RAINFALL IN COMBINATION WITH ICE ON SOME RIVERS...WILL
MAKE FLASH FLOODING WITH RAPID RISES FROM ICE JAMS IS POSSIBLE.
THE ROCK RIVER IS MOST AT RISK FOR ICE JAM FLOODING. URBAN AREAS
MAY ALSO SEE FLASH FLOODING WHERE DRAINAGE OF SNOW MELT AND
RAINFALL IS SLOWED BY CLOGGED STORM SEWER SYSTEMS CLOGGED WITH ICE
FROM RECENT STORMS.

IAZ042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-009-
015>018-024>026-034-035-MOZ009-010-271730-
/O.CON.KDVN.FF.A.0021.000000T0000Z-081228T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-CEDAR-CLINTON-
MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-
DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-
HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...DUBUQUE...VINTON...CEDAR RAPIDS...
ANAMOSA...MAQUOKETA...MARENGO...IOWA CITY...TIPTON...CLINTON...
MUSCATINE...BETTENDORF...DAVENPORT...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...GALENA...FREEPORT...MOUNT CARROLL...STERLING...
ROCK FALLS...MOLINE...ROCK ISLAND...KEWANEE...PRINCETON...
HENNEPIN...ALEDO...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...
MEMPHIS...KAHOKA
325 AM CST SAT DEC 27 2008

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES 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...CEDAR...CLINTON...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.

* THROUGH THIS AFTERNOON

* HEAVY RAINFALL OF 1 TO 2 INCHES IS EXPECTED THROUGH THIS
  AFTERNOON...ALONG WITH SIGNIFICANT MELTING SNOW. THE HEAVIER
  RAINS ARE EXPECTED TO OCCUR MAINLY ALONG AND EAST OF THE
  MISSISSIPPI RIVER...BUT THUNDERSTORMS AND RENEWED RAIN
  DEVELOPMENT MAY ALSO PRODUCE LOCALLY HEAVY RAIN WEST OF THE
  MISSISSIPPI RIVER. RUN OFF FROM THE MELTING SNOW AND RAINFALL WILL
  LIKELY CAUSE FLOODING ON AREA STREAMS AND SIGNIFICANT RISES AND
  POSSIBLE FLOODING ON TRIBUTARY RIVERS. ICE JAMS ARE POSSIBLE ON
  THE ROCK RIVER...RESULTING IN LOCALIZED FLASH FLOODING. A FEW
  OTHER AREA RIVERS MAY ALSO BE PRONE TO ICE JAMS AS WELL. URBAN
  FLASH FLOODING WILL ALSO BE POSSIBLE DUE TO HEAVY RAINFALL AND
  SNOW MELT.

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.

$$

DLF/12
000 
WGUS63 KDVN 271730
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1130 AM CST SAT DEC 27 2008

...FLASH FLOODING THREAT CONTINUES TODAY DUE TO HEAVY RAIN...ICE
JAMS...AND SNOW MELT...

.WARM...MOIST AIR WILL CONTINUE TO OVERSPREAD THE REGION TODAY...
MELTING MUCH OF THE REMAINING SNOW AND ICE. A LARGE PORTION OF
THE SNOW AND ICE HAS ALREADY MELTED AND IS PRODUCING RUN OFF.
ROUNDS OF SHOWERS AND THUNDERSTORMS HAVE ALREADY IMPACTED
SOUTHEAST IOWA...NORTHEAST MISSOURI AN WESTERN ILLINOIS
OVERNIGHT...AND WILL CONTINUE TODAY AS A STRONG STORM SYSTEM
MOVES UP TOWARD THE AREA OUT OF THE SOUTHERN PLAINS. THE RAIN
WILL BE HEAVY AT TIMES THROUGH THIS AFTERNOON...WITH RAINFALL
TOTALS OVER NORTHEAST MISSOURI...EASTERN IOWA...AND ILLINOIS ARE
EXPECTED TO RANGE FROM 1 TO 2 INCHES... WITH SOME LOCALLY HIGHER
AMOUNTS WHERE THUNDERSTORMS OCCUR. THE MELT WATER AND RAINFALL
WILL CONTINUE TO RUN OFF INTO AREA STREAMS AND RIVERS. THIS IS
LIKELY TO PRODUCE FLOODING. RAINFALL IN COMBINATION WITH ICE ON
SOME RIVERS...WILL MAKE FLASH FLOODING WITH RAPID RISES FROM ICE
JAMS IS POSSIBLE. THE ROCK RIVER IS MOST AT RISK FOR ICE JAM
FLOODING. URBAN AREAS MAY ALSO SEE FLASH FLOODING WHERE DRAINAGE
OF SNOW MELT AND RAINFALL IS SLOWED BY CLOGGED STORM SEWER
SYSTEMS CLOGGED WITH ICE FROM RECENT STORMS.

IAZ042-051>054-063>068-076>078-087>089-098-099-MOZ009-010-271830-
/O.CAN.KDVN.FF.A.0021.000000T0000Z-081228T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-CEDAR-CLINTON-
MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-
DES MOINES-VAN BUREN-LEE-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...DUBUQUE...VINTON...CEDAR RAPIDS...
ANAMOSA...MAQUOKETA...MARENGO...IOWA CITY...TIPTON...CLINTON...
MUSCATINE...BETTENDORF...DAVENPORT...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...MEMPHIS...KAHOKA
1130 AM CST SAT DEC 27 2008

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF IOWA AND NORTHEAST MISSOURI
HAS BEEN CANCELLED. THE RISK FOR FLASH FLOODING HAS SHIFTED EAST
OUT OF IOWA AND NORTHEAST MISSOURI. HOWEVER...THE THREAT HAS
CHANGED TO A RIVER FLOODING RISK AND ICE JAM FLOODING RISK. WATCH
FOR LATER STATEMENTS ON THIS FLOODING SITUATION.

$$

ILZ001-002-007-009-015>018-024>026-034-035-280000-
/O.CON.KDVN.FF.A.0021.000000T0000Z-081228T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-ROCK ISLAND-HENRY IL-
BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-HANCOCK-MCDONOUGH-
INCLUDING THE CITIES OF...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO...OQUAWKA...MONMOUTH...CARTHAGE...
MACOMB
1130 AM CST SAT DEC 27 2008

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF NORTH CENTRAL ILLINOIS...NORTHWEST ILLINOIS AND 
  WEST CENTRAL ILLINOIS...INCLUDING THE FOLLOWING AREAS...IN 
  NORTH CENTRAL ILLINOIS...BUREAU AND PUTNAM. IN NORTHWEST 
  ILLINOIS...CARROLL...HENRY IL...JO DAVIESS...MERCER...ROCK 
  ISLAND...STEPHENSON AND WHITESIDE. IN WEST CENTRAL ILLINOIS...
  HANCOCK...HENDERSON...MCDONOUGH AND WARREN.

* UNTIL 6 PM CST THIS AFTERNOON

* HEAVY RAINFALL OF 1 TO 2 INCHES IS EXPECTED THROUGH THIS
  AFTERNOON...ALONG WITH SIGNIFICANT MELTING SNOW. THE HEAVIER
  RAINS ARE EXPECTED TO OCCUR MAINLY ALONG AND EAST OF THE
  MISSISSIPPI RIVER. RUN OFF FROM THE MELTING SNOW AND RAINFALL
  WILL LIKELY CAUSE FLOODING ON AREA STREAMS AND SIGNIFICANT RISES
  AND POSSIBLE FLOODING ON TRIBUTARY RIVERS. ICE JAMS ARE POSSIBLE
  ON THE ROCK RIVER...RESULTING IN LOCALIZED FLASH FLOODING. A FEW
  OTHER AREA RIVERS MAY ALSO BE PRONE TO ICE JAMS AS WELL. URBAN
  FLASH FLOODING WILL ALSO BE POSSIBLE DUE TO HEAVY RAINFALL AND
  SNOW MELT.

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.

$$
000 
WGUS63 KDVN 271917
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
117 PM CST SAT DEC 27 2008

...THUNDERSTORMS EXITING THE AREA...

.THUNDERSTORMS HAVE MOVED OUT OF NORTHWEST AND WEST CENTRAL
ILLINOIS...THUS THE FLASH FLOOD THREAT IS ON THE DECREASE.

ILZ001-002-007-009-015>018-024>026-034-035-272030-
/O.CAN.KDVN.FF.A.0021.000000T0000Z-081228T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-ROCK ISLAND-HENRY IL-
BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-HANCOCK-MCDONOUGH-
INCLUDING THE CITIES OF...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO...OQUAWKA...MONMOUTH...CARTHAGE...
MACOMB
117 PM CST SAT DEC 27 2008

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF NORTH CENTRAL ILLINOIS...
NORTHWEST ILLINOIS AND WEST CENTRAL ILLINOIS HAS BEEN CANCELLED.

THUNDERSTORMS HAVE EXITED THE AREA...THUS THE FLASH FLOOD THREAT
HAS DECREASED. HOWEVER...THE COMBINATION OF RAINFALL AND SNOWMELT
WILL PUSH SOME AREA RIVERS INTO FLOOD...AND MANY OTHER AREA
STREAMS AND RIVERS UP TO BANKFULL. PLUS THE THREAT OF ICE JAM
FLOODING EXISTS MAINLY ON RIVERS IN NORTHWEST ILLINOIS SUCH AS THE
ROCK AND GREEN. SO IF YOU HAVE AN INTEREST ALONG AREA
RIVERS...STAY TUNED FOR THE LATEST FORECASTS.

$$

WOLF

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 26, 1:24 PM CSTDense Fog AdvisoryDVNBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more17 hr

Nearby

Flash Flood Watches in Iowa, 2008Flash Flood Watches in Illinois, 2008Flash Flood Watches in Missouri, 2008Every flash flood watch in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.