Alert archive / Iowa / Flash Flood Watches in 2011

Flash Flood Watch 3, NWS Quad Cities, IA

June 13, 20119 counties in Iowa; Clark County, Scotland County, Missouri; 4 counties in Illinois

NWS Quad Cities, IA issued this flash flood watch at Jun 13, 2011, 3:47 PM CDT for 9 counties in Iowa; Clark County, Scotland County, Missouri; 4 counties in Illinois. It took effect at Jun 13, 2011, 7:00 PM CDT. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued
Jun 13, 2011, 3:47 PM CDT (20:47 UTC)
In effect from
Jun 13, 2011, 7:00 PM CDT
Expired
Jun 15, 2011, 7:00 AM CDT
In force
36 hr
Issued by
NWS Quad Cities, IA
Flood severity
None

Counties Des Moines County, IA, Henry County, IA, Iowa County, IA, Jefferson County, IA, Keokuk County, IA, Lee County, IA, Louisa County, IA, Van Buren County, IA, Washington County, IA, Hancock County, IL, Henderson County, IL, McDonough County, IL, Warren County, IL, Clark County, MO, Scotland County, MO

The radar

The Quad Cities radar (KDVN), 112 km from the middle of the area, began a volume at 20:47 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, 8.8 hours before the alert went out and 117 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 2011-06-13Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2011-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.193958Sfc1 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
1758 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
144 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.

915 
WGUS63 KDVN 132047
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
347 PM CDT MON JUN 13 2011

...THUNDERSTORMS WITH HEAVY RAINFALL LIKELY TONIGHT...

.ANOTHER ROUND OF THUNDERSTORMS WITH HEAVY RAINFALL IS EXPECTED
TONIGHT ACROSS SOUTHEAST IOWA...FAR NORTHEAST MISSOURI...AND WEST
CENTRAL ILLINOIS. RAINFALL AMOUNTS OF 1 TO 2 INCHES IN A SHORT
AMOUNT OF TIME WILL BE POSSIBLE. THIS MAY QUICKLY LEAD TO RAPID
RUN OFF AND FLASH FLOODING AS THE GROUND IS ALREADY SATURATED
FROM HEAVY RAIN AMOUNTS OVER THE PAST WEEK.

IAZ063-076>078-087>089-098-099-ILZ025-034-035-MOZ009-010-140500-
/O.NEW.KDVN.FF.A.0003.110614T0000Z-110614T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...CARTHAGE...MACOMB...MEMPHIS...KAHOKA
347 PM CDT MON JUN 13 2011

...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH
TUESDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF WEST CENTRAL ILLINOIS...IOWA 
  AND NORTHEAST MISSOURI...INCLUDING THE FOLLOWING AREAS...IN 
  WEST CENTRAL ILLINOIS...HANCOCK...HENDERSON AND MCDONOUGH. IN 
  IOWA...DES MOINES...HENRY IA...IOWA...JEFFERSON...KEOKUK... 
  LEE...LOUISA...VAN BUREN AND WASHINGTON. IN NORTHEAST 
  MISSOURI...CLARK AND SCOTLAND. 

* FROM 7 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON

* THUNDERSTORMS WITH HEAVY RAINFALL ARE EXPECTED LATE TONIGHT OVER
  THE AREA. THE HEAVY RAIN FALLING ON SATURATED SOILS WILL LEAD
  TO RAPID RUNOFF AND FLASH FLOODING.

* RAPID RISES ON CREEKS AND SMALL STREAMS WILL BE POSSIBLE...ALONG
  WITH URBAN STREET 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.

&&

$$

SHEETS
7 follow-up statements
181 
WGUS63 KDVN 140156
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
856 PM CDT MON JUN 13 2011

...THUNDERSTORMS WITH HEAVY RAINFALL TONIGHT...

.ANOTHER ROUND OF THUNDERSTORMS WITH HEAVY RAINFALL WILL OCCUR TONIGHT
ACROSS SOUTHEAST IOWA...FAR NORTHEAST MISSOURI...AND WEST CENTRAL
ILLINOIS. RAINFALL AMOUNTS OF 1 TO 2 INCHES IN A SHORT AMOUNT OF
TIME WILL BE POSSIBLE. THIS MAY QUICKLY LEAD TO RAPID RUN OFF AND
FLASH FLOODING AS THE GROUND IS ALREADY SATURATED FROM HEAVY RAIN
AMOUNTS OVER THE PAST WEEK.

IAZ063-076>078-087>089-098-099-ILZ025-034-035-MOZ009-010-141000-
/O.CON.KDVN.FF.A.0003.000000T0000Z-110614T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...CARTHAGE...MACOMB...MEMPHIS...KAHOKA
856 PM CDT MON JUN 13 2011

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

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF WEST CENTRAL ILLINOIS...IOWA AND NORTHEAST 
  MISSOURI...INCLUDING THE FOLLOWING AREAS...IN WEST CENTRAL 
  ILLINOIS...HANCOCK...HENDERSON AND MCDONOUGH. IN IOWA...DES 
  MOINES...HENRY IA...IOWA...JEFFERSON...KEOKUK...LEE...LOUISA...
   VAN BUREN AND WASHINGTON. IN NORTHEAST MISSOURI...CLARK AND 
  SCOTLAND. 

* THROUGH TUESDAY AFTERNOON

* THUNDERSTORMS WITH HEAVY RAINFALL ARE EXPECTED LATE TONIGHT 
  OVER THE AREA. THE HEAVY RAIN FALLING ON SATURATED SOILS WILL 
  LEAD TO RAPID RUNOFF AND FLASH FLOODING. 

* RAPID RISES ON CREEKS AND SMALL STREAMS WILL BE POSSIBLE... 
  ALONG WITH URBAN STREET 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.

&&

$$
232 
WGUS63 KDVN 140903
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
403 AM CDT TUE JUN 14 2011

...HEAVY RAINFALL POSSIBLE OVER SOUTHEAST IOWA...NORTHEAST
MISSOURI AND WEST CENTRAL ILLINOIS AGAIN TONIGHT...

.ANOTHER ROUND OF THUNDERSTORMS WITH HEAVY RAINFALL WILL OCCUR
TONIGHT ACROSS SOUTHEAST IOWA...FAR NORTHEAST MISSOURI...AND WEST
CENTRAL ILLINOIS. RAINFALL AMOUNTS OF 1 TO 2 INCHES IN A SHORT
AMOUNT OF TIME WILL BE POSSIBLE. THERE IS SOME POTENTIAL FOR SOME
AREAS TO GET FROM 2 TO 4 INCHES OF NEW RAINFALL BY WEDNESDAY
MORNING. WITH MANY AREAS ALREADY HARD HIT BY VERY HEAVY RAIN FROM
MONDAY AFTERNOON INTO TUESDAY MORNING...THIS ADDITIONAL RAINFALL WILL
QUICKLY LEAD TO RAPID RUN OFF AND RENEWED FLASH FLOODING AS THE
GROUND IS ALREADY SATURATED. SERIOUS FLASH FLOODING WITH MANY AREAS
IMPACTED MAY BE IMMINENT.

ILZ026-141715-
/O.EXB.KDVN.FF.A.0003.000000T0000Z-110615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN-
INCLUDING THE CITY OF...MONMOUTH
403 AM CDT TUE JUN 14 2011

...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE A PORTION OF WEST CENTRAL 
  ILLINOIS...INCLUDING THE FOLLOWING AREA...WARREN. 

* THROUGH WEDNESDAY MORNING

* THUNDERSTORMS WITH HEAVY RAINFALL ARE EXPECTED AGAIN TONIGHT
  OVER THE AREA. THE HEAVY RAIN FALLING ON ALREADY SATURATED
  SOILS WILL LEAD TO RAPID RUNOFF AND FLASH FLOODING.

* RAPID RISES ON CREEKS AND SMALL RIVERS WILL BE POSSIBLE... 
  ALONG WITH URBAN STREET 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.

&&

$$

IAZ063-076>078-087>089-098-099-ILZ025-034-035-MOZ009-010-141715-
/O.EXT.KDVN.FF.A.0003.000000T0000Z-110615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...CARTHAGE...MACOMB...MEMPHIS...KAHOKA
403 AM CDT TUE JUN 14 2011

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH WEDNESDAY MORNING...

THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR

* PORTIONS OF WEST CENTRAL ILLINOIS...IOWA AND NORTHEAST 
  MISSOURI...INCLUDING THE FOLLOWING AREAS...IN WEST CENTRAL 
  ILLINOIS...HANCOCK...HENDERSON AND MCDONOUGH. IN IOWA...DES 
  MOINES...HENRY IA...IOWA...JEFFERSON...KEOKUK...LEE...LOUISA...
   VAN BUREN AND WASHINGTON. IN NORTHEAST MISSOURI...CLARK AND 
  SCOTLAND. 

* THROUGH WEDNESDAY MORNING

* THUNDERSTORMS WITH HEAVY RAINFALL ARE EXPECTED AGAIN TONIGHT
  OVER THE AREA. THE HEAVY RAIN FALLING ON ALREADY SATURATED
  SOILS WILL LEAD TO RAPID RUNOFF AND FLASH FLOODING.

* RAPID RISES ON CREEKS AND SMALL RIVERS WILL BE POSSIBLE... 
  ALONG WITH URBAN STREET 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.

&&

$$

12
293 
WGUS63 KDVN 141638
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1138 AM CDT TUE JUN 14 2011

...HEAVY RAINFALL REMAINS POSSIBLE OVER SOUTHEAST IOWA...NORTHEAST
MISSOURI AND WEST CENTRAL ILLINOIS AGAIN TONIGHT...

.MORE THUNDERSTORMS WITH POTENTIALLY HEAVY RAINFALL ARE EXPECTED LATE
THIS AFTERNOON AND ESPECIALLY TONIGHT ACROSS PORTIONS OF SOUTHEAST
IOWA...FAR NORTHEAST MISSOURI...AND WEST CENTRAL ILLINOIS. ADDITIONAL
RAINFALL AMOUNTS OF 1 TO 2 INCHES IN A SHORT AMOUNT OF TIME ARE
POSSIBLE. THERE IS THE RISK SOME AREAS MAY RECEIVE 2 TO 4 INCHES
OF NEW RAINFALL BY WEDNESDAY MORNING. MANY AREAS HAVE ALREADY BEEN
HARD HIT BY VERY HEAVY RAIN OF 3 TO 7 INCHES FROM MONDAY AFTERNOON
INTO THIS MORNING. ADDITIONAL SIGNIFICANT RAINFALL OVER THESE SAME
AREAS WOULD QUICKLY LEAD TO RAPID RUN OFF AND RENEWED FLASH FLOODING
AS THE GROUND IS ALREADY SATURATED. MAJOR FLASH FLOODING WITH MANY
AREAS IMPACTED MAY BE IMMINENT IF HEAVY RAIN DOES OCCUR ON THESE
AREAS THAT EARLIER RECEIVED HEAVY RAINFALL.

IAZ063-076>078-087>089-098-099-ILZ025-026-034-035-MOZ009-010-
150045-
/O.CON.KDVN.FF.A.0003.000000T0000Z-110615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...MEMPHIS...
KAHOKA
1138 AM CDT TUE JUN 14 2011

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY
MORNING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF WEST CENTRAL ILLINOIS...IOWA AND NORTHEAST 
  MISSOURI...INCLUDING THE FOLLOWING AREAS...IN WEST CENTRAL 
  ILLINOIS...HANCOCK...HENDERSON...MCDONOUGH AND WARREN. IN 
  IOWA...DES MOINES...HENRY IA...IOWA...JEFFERSON...KEOKUK... 
  LEE...LOUISA...VAN BUREN AND WASHINGTON. IN NORTHEAST 
  MISSOURI...CLARK AND SCOTLAND. 

* THROUGH WEDNESDAY MORNING

* THUNDERSTORMS WITH HEAVY RAINFALL OF 1 TO 2 INCHES AND LOCALLY
  UP TO 4 INCHES ARE POSSIBLE AGAIN TONIGHT OVER THE REGION. ANY
  HEAVY RAIN FALLING ON ALREADY SATURATED SOILS COULD LEAD TO RAPID
  RUNOFF AND FLASH FLOODING.

* SIGNIFICANT TO POTENTIALLY MAJOR FLASH FLOODING IS A RISK FOR
  LOCATIONS THAT RECEIVED 3 INCHES OR MORE IN THE PAST 24 HOURS
  WITH ADDITIONAL NEW HEAVY RAINFALL.

* RAPID RISES ON CREEKS AND SMALL RIVERS WILL BE POSSIBLE... 
  ALONG WITH URBAN STREET 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.

&&

$$

NICHOLS
053 
WGUS63 KDVN 142021
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
321 PM CDT TUE JUN 14 2011

...ADDITIONAL HEAVY RAINFALL IS POSSIBLE OVER SOUTHEAST IOWA...
NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS AGAIN TONIGHT...

.MORE THUNDERSTORMS WITH POTENTIALLY HEAVY RAINFALL IS EXPECTED TO
FIRE LATE THIS AFTERNOON AND ESPECIALLY TONIGHT ACROSS PORTIONS OF
SOUTHEAST IOWA...FAR NORTHEAST MISSOURI...AND WEST CENTRAL ILLINOIS.
ADDITIONAL RAINFALL AMOUNTS OF .5 TO 1.5 INCHES IN A SHORT AMOUNT
OF TIME ARE POSSIBLE. THERE IS THE RISK SOME AREAS MAY RECEIVE 2
OR MORE INCHES OF NEW RAINFALL BY WEDNESDAY MORNING. MANY AREAS
HAVE ALREADY BEEN HARD HIT BY VERY HEAVY RAIN OF 3 TO 7 INCHES FROM
MONDAY AFTERNOON INTO THIS MORNING. ADDITIONAL SIGNIFICANT RAINFALL
OVER THESE SAME AREAS WOULD QUICKLY LEAD TO RAPID RUN OFF AND RENEWED
FLASH FLOODING AS THE GROUND IS ALREADY SATURATED. MAJOR FLASH
FLOODING WITH MANY AREAS IMPACTED MAY BE IMMINENT IF HEAVY RAIN
DOES OCCUR ON THESE AREAS THAT EARLIER RECEIVED HEAVY RAINFALL.

IAZ063-076>078-087>089-098-099-ILZ025-026-034-035-MOZ009-010-
150430-
/O.CON.KDVN.FF.A.0003.000000T0000Z-110615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...MEMPHIS...
KAHOKA
321 PM CDT TUE JUN 14 2011

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY
MORNING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF WEST CENTRAL ILLINOIS...IOWA AND NORTHEAST 
  MISSOURI...INCLUDING THE FOLLOWING AREAS...IN WEST CENTRAL 
  ILLINOIS...HANCOCK...HENDERSON...MCDONOUGH AND WARREN. IN 
  IOWA...DES MOINES...HENRY IA...IOWA...JEFFERSON...KEOKUK... 
  LEE...LOUISA...VAN BUREN AND WASHINGTON. IN NORTHEAST 
  MISSOURI...CLARK AND SCOTLAND. 

* THROUGH WEDNESDAY MORNING

* THUNDERSTORMS WITH HEAVY RAINFALL OF 1 TO LOCALLY OVER 2 INCHES
  IS LIKELY AGAIN TONIGHT OVER THE REGION. HEAVY RAIN FALLING ON
  ALREADY SATURATED SOILS COULD LEAD TO RAPID RUNOFF AND FLASH
  FLOODING.

* SIGNIFICANT TO POTENTIALLY MAJOR FLASH FLOODING IS A RISK FOR
  LOCATIONS THAT RECEIVED 3 INCHES OR MORE IN THE PAST 24 HOURS
  WITH ADDITIONAL HEAVY RAINFALL APPROACHING 2 INCHES.

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.

&&

$$

NICHOLS
019 
WGUS63 KDVN 150037
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
737 PM CDT TUE JUN 14 2011

...ADDITIONAL HEAVY RAINFALL IS POSSIBLE OVER SOUTHEAST IOWA...
NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS AGAIN TONIGHT...

.MORE THUNDERSTORMS WITH POTENTIALLY HEAVY RAINFALL IS EXPECTED
TO FIRE THIS EVENING AND OVERNIGHT ACROSS PORTIONS OF SOUTHEAST
IOWA...FAR NORTHEAST MISSOURI...AND WEST CENTRAL ILLINOIS.
ADDITIONAL RAINFALL AMOUNTS OF .5 TO 1.5 INCHES IN A SHORT AMOUNT
OF TIME ARE POSSIBLE. THERE IS THE RISK SOME AREAS MAY RECEIVE 2
OR MORE INCHES OF NEW RAINFALL BY WEDNESDAY MORNING. MANY AREAS
HAVE ALREADY BEEN HARD HIT BY VERY HEAVY RAIN OF 3 TO 7 INCHES
FROM MONDAY AFTERNOON INTO THIS MORNING. ADDITIONAL SIGNIFICANT
RAINFALL OVER THESE SAME AREAS WOULD QUICKLY LEAD TO RAPID RUN OFF
AND RENEWED FLASH FLOODING AS THE GROUND IS ALREADY SATURATED.
MAJOR FLASH FLOODING WITH MANY AREAS IMPACTED MAY BE IMMINENT IF
HEAVY RAIN DOES OCCUR ON THESE AREAS THAT EARLIER RECEIVED HEAVY
RAINFALL.

IAZ063-076>078-087>089-098-099-ILZ025-026-034-035-MOZ009-010-
150845-
/O.CON.KDVN.FF.A.0003.000000T0000Z-110615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...MEMPHIS...
KAHOKA
737 PM CDT TUE JUN 14 2011

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT WEDNESDAY...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF WEST CENTRAL ILLINOIS...IOWA AND NORTHEAST 
  MISSOURI...INCLUDING THE FOLLOWING AREAS...IN WEST CENTRAL 
  ILLINOIS...HANCOCK...HENDERSON...MCDONOUGH AND WARREN. IN 
  IOWA...DES MOINES...HENRY IA...IOWA...JEFFERSON...KEOKUK... 
  LEE...LOUISA...VAN BUREN AND WASHINGTON. IN NORTHEAST 
  MISSOURI...CLARK AND SCOTLAND. 

* UNTIL 7 AM CDT WEDNESDAY

* THUNDERSTORMS WITH HEAVY RAINFALL OF 1 TO LOCALLY OVER 2 
  INCHES IS LIKELY AGAIN TONIGHT OVER THE REGION. HEAVY RAIN 
  FALLING ON ALREADY SATURATED SOILS COULD LEAD TO RAPID RUNOFF 
  AND FLASH FLOODING. 

* SIGNIFICANT TO POTENTIALLY MAJOR FLASH FLOODING IS A RISK FOR 
  LOCATIONS THAT RECEIVED 3 INCHES OR MORE IN THE PAST 24 HOURS 
  WITH ADDITIONAL HEAVY RAINFALL APPROACHING 2 INCHES. 

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.

&&

$$


ERVIN
080 
WGUS63 KDVN 150908
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
408 AM CDT WED JUN 15 2011

...THUNDERSTORMS WITH HEAVY RAINFALL EARLY THIS MORNING...

IAZ063-076>078-087>089-098-099-ILZ025-026-034-035-MOZ009-010-
151200-
/O.CON.KDVN.FF.A.0003.000000T0000Z-110615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...MEMPHIS...
KAHOKA
408 AM CDT WED JUN 15 2011

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT THIS
MORNING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF WEST CENTRAL ILLINOIS...IOWA AND NORTHEAST 
  MISSOURI...INCLUDING THE FOLLOWING AREAS...IN WEST CENTRAL 
  ILLINOIS...HANCOCK...HENDERSON...MCDONOUGH AND WARREN. IN 
  IOWA...DES MOINES...HENRY IA...IOWA...JEFFERSON...KEOKUK... 
  LEE...LOUISA...VAN BUREN AND WASHINGTON. IN NORTHEAST 
  MISSOURI...CLARK AND SCOTLAND. 

* UNTIL 7 AM CDT THIS MORNING

* HEAVY RAIN PRODUCING THUNDERSTORMS ARE STARTING TO MOVE OUT OF
  THE WATCH AREA...BUT SOME AREAS MAY STILL RECEIVE ANOTHER HALF
  INCH OF RAIN THROUGH 7 AM CDT. WITH AREA SOILS ALREADY SUPER
  SATURATED...ANY ADDITIONAL RAINFALL WILL IMMEDIATELY RUN OFF AND
  AGGRAVATE ANY ONGOING FLOODING SITUATIONS...OR CREATE NEW ONES
  EARLY THIS WEDNESDAY MORNING. HANCOCK AND MCDONOUGH COUNTIES IN
  WEST CENTRAL ILLINOIS...LEE COUNTY IN SOUTHEAST IOWA AND CLARK
  COUNTY IN NORTHEAST MISSOURI ARE ESPECIALLY PRONE TO SIGNIFICANT
  FLASH FLOODING THROUGH THE WATCH EXPIRATION TIME.

* SIGNIFICANT TO POTENTIALLY MAJOR FLASH FLOODING CONTINUES TO BE
  A RISK THIS MORNING FOR LOCATIONS THAT RECEIVED 2 TO 4 INCHES
  OR MORE IN THE PAST 12 HOURS.

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.

&&

$$

12
254 
WGUS63 KDVN 151154
FFADVN

FLOOD WATCH
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
654 AM CDT WED JUN 15 2011

...FLASH FLOOD WATCH WILL BE ALLOWED TO EXPIRE AT 7 AM CDT THIS
MORNING...

IAZ063-076>078-087>089-098-099-ILZ025-026-034-035-MOZ009-010-
151300-
/O.EXP.KDVN.FF.A.0003.000000T0000Z-110615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IOWA-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-DES MOINES-
VAN BUREN-LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MARENGO...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...MEMPHIS...
KAHOKA
654 AM CDT WED JUN 15 2011

...FLASH FLOOD WATCH WILL EXPIRE AT 7 AM CDT THIS MORNING...

THE FLASH FLOOD WATCH FOR PORTIONS OF WEST CENTRAL ILLINOIS...
IOWA AND NORTHEAST MISSOURI WILL EXPIRE AT 7 AM CDT THIS MORNING.

THE THREAT FOR WIDESPREAD HEAVY RAIN HAS SHIFTED SOUTH AND EAST OF
THE AREA...THUS THE FLASH FLOOD WATCH WILL BE ALLOWED TO EXPIRE.
HOWEVER...SIGNIFICANT AREAL FLOODING AND HIGH WATER TROUBLE WILL LAST 
WELL INTO THE DAY IN PORTIONS OF THE PREVIOUS WATCH AREA.

$$

12

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before this flash flood watch went out at Jun 13, 3:39 PM CDT, 8 minutes earlier.

Area forecast discussion, Jun 13, 3:39 PM CDT, 8 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
339 PM CDT MON JUN 13 2011

.SYNOPSIS...
THUNDERSTORM COMPLEX THAT MOVED OUT OF WESTERN IA THIS MORNING HAS
LEFT A WAKE LOW CENTRAL AND N CENTRAL IA RESULTING IN STRONG EASTERLY
WINDS. AT 3 PM...THE STRONGEST THUNDERSTORMS HAVE TURNED IN FAR SE
IA INTO NORTHEAST MO...WHILE A WEAK MCV AND HIGH BASED STRATIFYING
AREA OF RAIN AND ISOLATED LIGHTNING STRIKES WAS MOVING EAST MAINLY
SOUTH OF HIGHWAY 30. THIS ELEVATED CONVECTION WAS ALONG THE
NORTHERN EDGE OF A STRONG CAP IN THE CENTRAL PLAINS AND STRONG MOISTURE
ADVECTION MAINLY ABOVE 850 MB. LATEST MSAS ANALYSIS INDICATED HIGH
PRESSURE OVER THE WESTERN GREAT LAKES...LOW PRESSURE OVER THE OK
PANHANDLE...AND THE MAIN STATIONARY FRONT AT THE SURFACE EXTENDING
E-NE FROM THE LOW ACROSS KS INTO CENTRAL MO. IN THE UPPER
LEVELS...THE RIDGE AXIS REACHED FROM EASTERN TX NORTH THROUGH
CENTRAL IA AT 12Z.

&&

.SHORT TERM...TONIGHT AND TUESDAY...
COMPLEX FORECAST FOR TONIGHT...WITH MAIN FOCUS ON THREAT OF
ADDITIONAL THUNDERSTORM COMPLEXES AND HEAVY RAINFALL POSSIBLY
AFFECTING PORTIONS OF OUR RAIN SOAKED FORECAST AREA IN THE SOUTH.
AHEAD OF THIS...WAKE LOW GRADIENT WIND EVENT IN CENTRAL IA IS
EXPECTED TO MIGRATE EAST WITH THE PRESSURE FALL AXIS. THIS WILL
ESPECIALLY AFFECT AREAS NORTH OF I-80 LATE THIS AFTERNOON WITH
STRONG SUSTAINED EASTERLY WINDS...WHICH SHOULD WEAKEN SOME THIS
EVENING.

FORECAST MODELS FROM 12Z HAD A POOR HANDLE ON THE ON-GOING
THUNDERSTORM COMPLEX...WHICH HAS TAKEN OVER THE MESOSCALE
ENVIRONMENT OVER THE FORECAST AREA. THUS...LOW CONFIDENCE IN
DETERMINISTIC MODEL OUTPUT. HOWEVER...BASED ON THE CURRENT
SETUP...INCLUDING VERY WARM...CAPPED AIRMASS SOUTH OF THE SYNOPTIC
BOUNDARY IN THE PLAINS...AND 850 MB THETAE RIDGE AXIS POISED JUST SW
OF THE FORECAST AREA...POTENTIAL FOR MORE HEAVY RAIN OVER THE SOUTH
THAT SAW SOME MODERATE AMOUNTS TODAY IS A CONCERN. THE UPPER LEVEL
RIDGE IS PROGGED BY MODELS TO FLATTEN SOME WITH MID LEVEL SHORTWAVE
LIKELY TRIGGERING ANOTHER ROUND OF THUNDERSTORMS ALONG THE EDGE OF
THE PLAINS CAP LATE TONIGHT.

WITH THIS RISK...AND CONSIDERING THE SATURATED GROUND IN OUR
SOUTH...WILL GO OUT WITH A FLASH FLOOD WATCH FOR OVERNIGHT. WILL
HAVE IT GO THROUGH TUE MORNING BASED ON LOW CONFIDENCE IN THE
TIMING OF THE NOCTURNAL THUNDERSTORM COMPLEXES.

BEYOND...CANNOT RULE OUT ADDITIONAL RAIN AND THUNDERSTORMS THROUGH
THE DAY TUE AS THE LOW IN THE PLAINS ADVANCES AND THE FORECAST AREA
REMAINS JUST NORTH OF THE WARM FRONT. WILL KEEP HIGHER POPS IN THE
MORNING AND TEMPERATURES LIMITED TO THE 70S AT BEST UNDER THE CLOUD
COVER AND EASTERLY LOW LEVEL FLOW.
..SHEETS..

.LONG TERM...TUESDAY NIGHT THROUGH MONDAY...
OVERALL...MODEL INITIALIZATION WAS POOR ESPECIALLY IN REGARDS TO LOW
LEVEL MOISTURE. THE GEM SEEMS TO HAVE DONE A BIT BETTER ON MOISTURE
THAN THE OTHER MODELS.

THE QUESTION TUES NIGHT/WED IS WHERE DOES THE MCS INITIALLY FIRE.
MCS/LIFT TOOLS IN COMBINATION WITH THE HEAVY RAIN TOOL SUGGEST THE
MCS WILL EITHER DEVELOP OVER OR VERY NEAR THE CWFA DURING THE
EVENING AND GETS GOING IN ERNEST AFTER MIDNIGHT. WOULD LIKE TO SEE
THE LLJ STRONGER BUT THE INCREASED BAROCLINICITY BEING PROVIDED BY
FLOW OFF THE GREAT LAKES SHOULD ALLOW THE MCS TO GET BETTER
ORGANIZED. LIFT TOOL ALSO SHOWS A STRONG AREA OF CONVERGENCE
DEVELOPING ACROSS THE CWFA WHICH WOULD SUGGEST THE POTENTIAL FOR
HEAVY RAIN. CORFIDI VECTORS ARE NOT OVERLY STRONG AND WEAKEN LATE
TUES NIGHT INTO WED MORNING SUGGESTING STORM MOVEMENT WOULD NOT BE
OVERLY FAST. THE HEAVIEST RAIN SHOULD BE NEARLY COINCIDENT WITH THE
INTENSE CONVERGENCE ALOFT.

POPS HAVE BEEN INCREASED FOR LATE TUES NIGHT/WED MORNING. THERE WILL
LIKELY BE A BAND OF MODERATE TO HEAVY RAINFALL ASSOCIATED WITH THE
MCS THAT SLOWLY MOVES ACROSS THE CWFA. MAX TEMPERATURES FOR WED HAVE
BEEN LOWERED FURTHER BUT MAY STILL BE TOO WARM. THERE IS A VERY REAL
POSSIBILITY THAT MOST OF THE CWFA WILL REMAIN IN THE 60S WEDNESDAY.

LINGERING PRECIP FROM THE MCS WILL BE ACROSS THE CWFA WED EVENING AS
BOTH THE UPPER AND SFC LOWS SLOWLY MOVE EAST OF THE AREA. IT IS
POSSIBLE THAT THE PRECIP MAY END LATE WED NIGHT.

THE OVERALL SITUATION FOR THURSDAY IS NOT ENTIRELY CLEAR. SEVERAL
MODELS ARE SUGGESTING THAT THURSDAY COULD BE DRY. HOWEVER...MID
LEVEL LAPSE RATES DO STEEPEN DURING THE DAY AND MOST MODELS INDICATE
A VORT MAX WILL MOVE THROUGH IN THE FLOW ALOFT. SO...IN SPITE OF
500MB HEIGHTS RISING WILL GO WITH SCHC POPS FOR THE POSSIBILITY OF
SOME DIURNAL CONVECTION FIRING.

THURS NIGHT ON...
OVER THE PAST 30 DAYS A POSITIVE SST ANOMALY NORTH OF HAWAII HAS
GOTTEN STRONGER. AT THE SAME TIME ANOMALIES HAVE TURNED NEGATIVE AT
130W AND NOW ARE AT EXTREME VALUES OF -5C. ALL THIS INDICATES THAT A
LONGWAVE TROF WILL BE DEVELOPING ON THE WEST COAST WITH SOUTHWEST
FLOW ALOFT OVER THE CONUS AND THUS KEEPING THE CWA IN AN ACTIVE WX
PATTERN.

THUS MODEL CONSENSUS HAS SCHC/CHC POPS IN EVERY PERIOD FROM THURS
NIGHT THROUGH MON NIGHT. OVERALL SYNOPTIC SITUATION SUGGESTS MCS
ACTIVITY IN OR NEAR THE CWFA WITH A FRONTAL BOUNDARY INITIALLY SOUTH
OF THE AREA THAT SLOWLY MOVES NORTH. TEMPERATURES WILL BE ON THE
INCREASE OVER THE WEEKEND WITH GRADUALLY INCREASING HUMIDITY LEVELS.
..08..

&&

.AVIATION...
COMPLEX OF THUNDERSTORMS WITH STRONG WINDS AND HEAVY RAINFALL IN
SOUTHEAST IOWA WILL AFFECT THE BRL TERMINAL LATE THIS AFTERNOON.
A PERIOD OF BRISK EAST TO SE WINDS MAY THEN FOLLOW AT ALL
SITES...POSSIBLY SUSTAINED AS HIGH AS 30 KTS UNTIL SUNSET. ANOTHER
LARGE COMPLEX OF THUNDERSTORMS IS EXPECTED OVERNIGHT...WHICH AT THIS
TIME LOOKS MOST LIKELY TO IMPACT BRL...AND THEN MLI AND CID TO A
LESSER EXTENT...WITH IFR CIGS...GUSTY WINDS AND HEAVY RAINFALL.
ANTICIPATING LINGERING LOW CLOUDS IN AT LEAST MVFR CRITERIA
FOLLOWING THUNDERSTORMS LATE TONIGHT INTO TUE MORNING AT ALL SITES IN
CURRENT FORECASTS. LOW CONFIDENCE IN THE 12Z TO 18Z PERIOD AS TO
HOW LONG RAIN...THUNDERSTORMS AND LOW CIGS WILL LINGER.
..SHEETS..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY
     AFTERNOON FOR DES MOINES-HENRY IA-IOWA-JEFFERSON-KEOKUK-LEE-
     LOUISA-VAN BUREN-WASHINGTON.

IL...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY
     AFTERNOON FOR HANCOCK-HENDERSON-MCDONOUGH.

MO...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY
     AFTERNOON FOR CLARK-SCOTLAND.

&&

SHEETS/08
Hazardous weather outlook, Jun 13, 4:34 AM CDT, 11 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
434 AM CDT MON JUN 13 2011

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-140945-
BUCHANAN-DELAWARE-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-
434 AM CDT MON JUN 13 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.

.DAY ONE...TODAY AND TONIGHT

THERE WILL BE A CHANCE OF THUNDERSTORMS SPREADING ACROSS PORTIONS OF
THE OUTLOOK AREA TONIGHT...ESPECIALLY SOUTHWEST OF A LINE FROM CEDAR
RAPIDS TO THE QUAD CITIES. MORE SUBSTANTIAL STORMS WILL BE POSSIBLE
ALONG AND SOUTH OF A LINE FROM WASHINGTON IOWA...TO BURLINGTON AND
MACOMB ILLINOIS. STORMS IN THESE AREAS WILL BE ABLE TO PRODUCE
LOCALLY HEAVY RAINFALL AND POSSIBLY SOME LARGE HAIL.

THE STORM PREDICTION CENTER HAS PLACED AREAS GENERALLY ALONG AND
SOUTHWEST OF A LINE FROM WILLIAMSBURG IOWA...TO BURLINGTON...AND TO
SOUTH OF MACOMB ILLINOIS IN A SLIGHT RISK OF SEVERE WEATHER TONIGHT.

AREA RIVERS ARE EXPERIENCING FLOODING. PLEASE SEE THE LATEST
FLOOD STATEMENTS AND FLOOD WARNINGS FOR DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

MORE SHOWERS AND THUNDERSTORMS ARE EXPECTED TUESDAY THROUGH
WEDNESDAY NIGHT AS AN UPPER LEVEL LOW PRESSURE SYSTEM MOVES
THROUGH THE UPPER MIDWEST. WE ARE MOST LIKELY TO GET PRECIPITATION
IN THE OUTLOOK AREA TUESDAY NIGHT. WIDESPREAD SEVERE WEATHER IS
NOT ANTICIPATED.

THUNDERSTORMS ARE IN THE FORECAST FOR MUCH OF THURSDAY THROUGH
SUNDAY. IT IS TOO SOON TO DETERMINE THE PROBABILITY FOR SEVERE STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED IN PORTIONS OF SOUTHEAST IOWA AND
NORTHEAST MISSOURI LATER TONIGHT.

In the hours before

Special weather statement, Jun 13, 1:05 PM CDT, 2 hours 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
105 PM CDT MON JUN 13 2011

IAZ076-077-087-088-098-099-ILZ034-MOZ009-010-131900-
CLARK-HANCOCK-HENRY-JEFFERSON-KEOKUK-LEE-SCOTLAND-VAN
BUREN-WASHINGTON-
105 PM CDT MON JUN 13 2011

...THUNDERSTORMS WITH STRONG WINDS AND HEAVY RAINFALL MOVING INTO
NORTHEAST MISSOURI AND SOUTHEAST IOWA...

AT 1257 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM JUST WEST OF
OTTUMWA TO 6 MILES SOUTHWEST OF MEMPHIS...MOVING EAST AT 30 MPH. THE
STRONGEST STORM...CAPABLE OF PRODUCING PENNY SIZE HAIL AND VERY
HEAVY RAINFALL...WAS JUST WEST OF MEMPHIS AND MOVING NORTHEAST
AROUND 35 MPH.

THUNDERSTORMS WITH HEAVY RAINFALL...WIND GUSTS OF 30 TO 40 MPH...AND
POSSIBLY SMALL HAIL...WILL CONTINUE TO OVERSPREAD NORTHEAST MISSOURI
AND SOUTHEAST IOWA EARLY THIS AFTERNOON. BY 2 PM...THE LEADING EDGE
OF THE STORMS WILL LIKELY EXTEND FROM SIGOURNEY...THROUGH
FAIRFIELD TO KEOKUK.

IF YOU HEAR THUNDER, MOVE IMMEDIATELY TO A STURDY BUILDING OR CAR
UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD BE PREPARED FOR STRONG
GUSTY WINDS.

LAT...LON 4136 9241 4138 9187 4023 9138 4029 9196
      4030 9196 4030 9228 4041 9236 4060 9236
      4061 9219 4115 9219 4117 9242
TIME...MOT...LOC 1758Z 270DEG 28KT 4126 9287 4038 9221

SHEETS
Special weather statement, Jun 13, 1:46 PM CDT, 2 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
146 PM CDT MON JUN 13 2011

IAZ063>065-067-076>078-087>089-098-099-ILZ015-024-025-034-MOZ009-010-
131945-
CEDAR-CLARK-DES
MOINES-HANCOCK-HENDERSON-HENRY-IOWA-JEFFERSON-JOHNSON-KEOKUK-LEE-
LOUISA-MERCER-MUSCATINE-ROCK ISLAND-SCOTLAND-VAN BUREN-WASHINGTON-
146 PM CDT MON JUN 13 2011

..THUNDERSTORMS WITH STRONG WINDS MOVING INTO SOUTHEAST IOWA AND
NORTHEAST MISSOURI...

AT 135 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR NORTH ENGLISH
SOUTH THROUGH FAIRFIELD...TO NEAR BLOOMFIELD...MOVING EAST AT 45 MPH.

WINDS UP TO 50 MPH...BRIEF HEAVY RAINFALL AND PEA SIZE HAIL CAN BE
EXPECTED WITH THESE STORMS ACROSS SOUTHEAST IOWA THIS AFTERNOON.

WINDS MAY INCREASE TO 30 TO 40 MPH AFTER THE STORMS PASS AND REMAIN
STRONG THROUGH MID AFTERNOON.

MOTORISTS SHOULD BE PREPARED FOR VERY STRONG WINDS AND HEAVY
RAINFALL. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS
PASSED.

LAT...LON 4046 9225 4061 9220 4061 9219 4078 9214
      4124 9213 4180 9227 4159 9107 4110 9095
      4066 9095 4022 9134
TIME...MOT...LOC 1839Z 270DEG 40KT 4179 9218 4124 9201
          4078 9202 4055 9211

SHEETS
Local storm report, Jun 13, 2:23 PM CDT, 1 hour 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
223 PM CDT MON JUN 13 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 PM     TSTM WND GST     MEMPHIS                 40.46N 92.17W
06/13/2011  E45.00 MPH       SCOTLAND           MO   PUBLIC

            ESTIMATED WIND GUSTS 40-45 MPH.

0222 PM     TSTM WND GST     5 E CANTRIL             40.64N 91.98W
06/13/2011  E50.00 MPH       VAN BUREN          IA   TRAINED SPOTTER

            WNW WINDS WITH HEAVY RAIN. NO HAIL.

&&

TOMO
Special weather statement, Jun 13, 3:18 PM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
318 PM CDT MON JUN 13 2011

IAZ040-041-051>053-063>068-076>078-087>089-098-099-ILZ015-024>026-
132230-
BUCHANAN-DELAWARE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-CLINTON-
MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-HENRY IA-
DES MOINES-VAN BUREN-LEE-ROCK ISLAND-MERCER-HENDERSON-WARREN-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...VINTON...
CEDAR RAPIDS...ANAMOSA...MARENGO...IOWA CITY...TIPTON...CLINTON...
MUSCATINE...BETTENDORF...DAVENPORT...SIGOURNEY...WASHINGTON...
WAPELLO...FAIRFIELD...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...MOLINE...ROCK ISLAND...ALEDO...OQUAWKA...MONMOUTH
318 PM CDT MON JUN 13 2011

..STRONG WINDS MOVING INTO THE AREA WITH LIGHT RAIN...

AN AREA OF RAIN TO THE NORTH OF SOME STRONG THUNDERSTORMS OVER
FAR SOUTHEAST IOWA WILL CONTINUE THROUGH LATE AFTERNOON. AS THE LIGHT
RAIN DIMINISHES...WINDS MAY INCREASE TO 30 TO 40 MPH...WITH GUSTS
TO 50 MPH POSSIBLE.

MOTORISTS SHOULD BE PREPARED FOR STRONG EAST WINDS. LOOSE OBJECTS
MAY BE BLOWN AROUND BY THIS WIND...AND SMALL TREE LIMBS MAY BREAK.

ERVIN
Local storm report, Jun 13, 3:37 PM CDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
337 PM CDT MON JUN 13 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0226 PM     NON-TSTM WND GST MOUNT PLEASANT          40.96N 91.55W
06/13/2011  E55 MPH          HENRY              IA   TRAINED SPOTTER

            GUSTS TO 55 MPH EVERY 2-5 MINUTES. FROM E-SPOTTER.

&&

TOMO
Local storm report, Jun 13, 3:41 PM CDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
341 PM CDT MON JUN 13 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0226 PM     NON-TSTM WND GST MOUNT PLEASANT          40.96N 91.55W
06/13/2011  M51.00 MPH       HENRY              IA   TRAINED SPOTTER

            ESTIMATED GUSTS TO 55 MPH EVERY 2-5 MINUTES. FROM
            E-SPOTTER.

&&

TOMO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 1:05 PM CDTSpecial Weather StatementDVNJefferson, Keokuk, Van Buren55 min
Jun 13, 1:46 PM CDTSpecial Weather StatementDVNDes Moines, Henry, Iowa, Jefferson, Johnson, Lee and 4 more59 min

Nearby

Flash Flood Watches in Iowa, 2011Flash Flood Watches in Illinois, 2011Flash Flood Watches in Missouri, 2011Every flash flood watch in 2011

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.