Flash Flood Watch 11, NWS Des Moines, IA

Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Cerro Gordo County, IA, Emmet County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Jasper County, IA, Kossuth County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Poweshiek County, IA, Story County, IA, Tama County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

509 
WGUS63 KDMX 070151
FFADMX

FLOOD WATCH
NATIONAL WEATHER SERVICE DES MOINES IA
851 PM CDT TUE SEP 6 2016

...HEAVY RAIN THREAT OVER NORTHERN IOWA TONIGHT INTO WEDNESDAY...

.THUNDERSTORMS CAPABLE OF PRODUCING HEAVY RAIN ARE EXPECTED TO
DEVELOP THIS EVENING AND BECOME MORE WIDESPREAD LATE TONIGHT INTO
THE OVERNIGHT HOURS ACROSS NORTHERN IOWA. THE MOST INTENSE
RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE LIKELY AND RAINFALL
TOTALS OVER 2 TO 4 INCHES ARE EXPECTED BY WEDNESDAY AFTERNOON...
WITH SOME LOCALLY HIGHER AMOUNTS OVER 4 INCHES POSSIBLE.

IAZ004>007-015>017-023>028-035>039-071000-
/O.CON.KDMX.FF.A.0011.160907T0300Z-160908T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-WEBSTER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
LAKE MILLS...NORTHWOOD...MANLY...EMMETSBURG...GARNER...BRITT...
KANAWHA...MASON CITY...CLEAR LAKE...POCAHONTAS...LAURENS...
ROLFE...FONDA...GILMORE CITY...HUMBOLDT...EAGLE GROVE...CLARION...
BELMOND...HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...
GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY...FORT DODGE...
WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER...
REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS
851 PM CDT TUE SEP 6 2016

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

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF CENTRAL IOWA...NORTH CENTRAL IOWA...NORTHEAST IOWA 
  AND NORTHWEST IOWA...INCLUDING THE FOLLOWING AREAS...IN 
  CENTRAL IOWA...GRUNDY...HAMILTON...HARDIN AND WEBSTER. IN 
  NORTH CENTRAL IOWA...BUTLER...CERRO GORDO...FRANKLIN... 
  HANCOCK...HUMBOLDT...KOSSUTH...WINNEBAGO...WORTH AND WRIGHT. 
  IN NORTHEAST IOWA...BLACK HAWK AND BREMER. IN NORTHWEST IOWA...
   EMMET...PALO ALTO AND POCAHONTAS. 

* THROUGH WEDNESDAY EVENING

* THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF PRODUCING INTENSE
  RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE EXPECTED TO MATURE
  TOWARD MIDNIGHT...CONTINUE THROUGH THE EARLY MORNING HOURS...AND
  AGAIN PERIODICALLY THROUGHOUT THE DAY WEDNESDAY. HEAVY RAIN
  FALLING OVER THE SAME LOCATION IN A SHORT TIME FRAME MAY LEAD TO
  FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

SMALL

929 
WGUS63 KDMX 070917
FFADMX

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE DES MOINES IA
417 AM CDT WED SEP 7 2016

...HEAVY RAIN THREAT TODAY INTO THIS EVENING...

.THUNDERSTORMS CAPABLE OF PRODUCING HEAVY RAIN ARE EXPECTED TO
CONTINUE ACROSS NORTHERN IOWA TODAY...AND BECOME MORE WIDESPREAD
LATER TODAY INTO THIS EVENING ACROSS PORTIONS OF CENTRAL IOWA. THE
MOST INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE LIKELY
AND RAINFALL TOTALS OF OVER 2 TO 4 INCHES ARE EXPECTED BY THIS
AFTERNOON...WITH SOME LOCALLY HIGHER AMOUNTS OVER 4 INCHES
POSSIBLE.

IAZ047>050-060>062-071730-
/O.EXB.KDMX.FF.A.0011.160907T1200Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BOONE-STORY-MARSHALL-TAMA-POLK-JASPER-POWESHIEK-
INCLUDING THE CITIES OF...BOONE...AMES...MARSHALLTOWN...TAMA...
TOLEDO...TRAER...DYSART...GLADBROOK...DES MOINES...NEWTON...
GRINNELL
417 AM CDT WED SEP 7 2016

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE A PORTION OF CENTRAL IOWA... 
  INCLUDING THE FOLLOWING AREAS...BOONE...JASPER...MARSHALL... 
  POLK...POWESHIEK...STORY AND TAMA. 

* THROUGH THIS EVENING

* THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF PRODUCING INTENSE
  RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE EXPECTED TO SPREAD
  ACROSS THE AREA THROUGH MID-DAY AND CONTINUE INTO THIS EVENING
  BEFORE MOVING EAST. HEAVY RAIN FALLING OVER THE SAME LOCATION
  IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL
  CREEKS AND STREAMS WILL BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

IAZ004>007-015>017-023>025-035-071730-
/O.EXT.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-WEBSTER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
LAKE MILLS...NORTHWOOD...MANLY...EMMETSBURG...GARNER...BRITT...
KANAWHA...MASON CITY...CLEAR LAKE...POCAHONTAS...LAURENS...
ROLFE...FONDA...GILMORE CITY...HUMBOLDT...EAGLE GROVE...CLARION...
BELMOND...FORT DODGE
417 AM CDT WED SEP 7 2016

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH THIS EVENING...

THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR

* PORTIONS OF CENTRAL IOWA...NORTH CENTRAL IOWA AND NORTHWEST 
  IOWA...INCLUDING THE FOLLOWING AREAS...IN CENTRAL IOWA... 
  WEBSTER. IN NORTH CENTRAL IOWA...CERRO GORDO...HANCOCK... 
  HUMBOLDT...KOSSUTH...WINNEBAGO...WORTH AND WRIGHT. IN 
  NORTHWEST IOWA...EMMET...PALO ALTO AND POCAHONTAS. 

* THROUGH THIS EVENING

* THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF PRODUCING INTENSE
  RAINFALL RATES OF 1 TO 3 INCHES PER HOUR WILL CONTINUE
  PERIODICALLY THROUGH THE DAY. HEAVY RAIN FALLING OVER THE SAME
  LOCATION IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL
  CREEKS AND STREAMS WILL BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

IAZ026>028-036>039-071730-
/O.EXT.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FRANKLIN-BUTLER-BREMER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...HAMPTON...PARKERSBURG...CLARKSVILLE...
SHELL ROCK...GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY...
WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER...
REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS
417 AM CDT WED SEP 7 2016

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH THIS EVENING...

THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR

* PORTIONS OF CENTRAL IOWA...NORTH CENTRAL IOWA AND NORTHEAST 
  IOWA...INCLUDING THE FOLLOWING AREAS...IN CENTRAL IOWA... 
  GRUNDY...HAMILTON AND HARDIN. IN NORTH CENTRAL IOWA...BUTLER 
  AND FRANKLIN. IN NORTHEAST IOWA...BLACK HAWK AND BREMER. 

* THROUGH THIS EVENING

* THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF PRODUCING INTENSE
  RAINFALL RATES OF 1 TO 3 INCHES PER HOUR WILL CONTINUE
  PERIODICALLY THROUGH THE DAY. HEAVY RAIN FALLING OVER THE SAME
  LOCATION IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL
  CREEKS AND STREAMS WILL BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

MJB

097 
WGUS63 KDMX 071527
FFADMX

FLOOD WATCH
NATIONAL WEATHER SERVICE DES MOINES IA
1027 AM CDT WED SEP 7 2016

...HEAVY RAIN THREAT CONTINUES INTO THIS EVENING...

.THUNDERSTORMS CAPABLE OF PRODUCING HEAVY RAIN ARE EXPECTED ACROSS
PORTIONS OF EAST-CENTRAL IOWA TODAY INTO THIS EVENING. THE MOST
INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE LIKELY AND
RAINFALL TOTALS OF OVER 2 TO 4 INCHES ARE EXPECTED BY THIS
AFTERNOON...WITH SOME LOCALLY HIGHER AMOUNTS OVER 4 INCHES
POSSIBLE.

IAZ004>006-015-016-023-024-035-071630-
/O.CAN.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
EMMET-KOSSUTH-WINNEBAGO-PALO ALTO-HANCOCK-POCAHONTAS-HUMBOLDT-
WEBSTER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
LAKE MILLS...EMMETSBURG...GARNER...BRITT...KANAWHA...POCAHONTAS...
LAURENS...ROLFE...FONDA...GILMORE CITY...HUMBOLDT...FORT DODGE
1027 AM CDT WED SEP 7 2016

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL IOWA...NORTH
CENTRAL IOWA AND NORTHWEST IOWA HAS BEEN CANCELLED. ADDITIONAL
THUNDERSTORMS ARE POSSIBLE THROUGHOUT THE DAY TODAY...BUT THE THREAT
FOR HEAVY RAIN HAS DIMINISHED.

$$

IAZ007-017-025-072330-
/O.CON.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WORTH-CERRO GORDO-WRIGHT-
INCLUDING THE CITIES OF...NORTHWOOD...MANLY...MASON CITY...
CLEAR LAKE...EAGLE GROVE...CLARION...BELMOND
1027 AM CDT WED SEP 7 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

THE FLASH FLOOD WATCH CONTINUES FOR

* A PORTION OF NORTH CENTRAL IOWA...INCLUDING THE FOLLOWING 
  AREAS...CERRO GORDO...WORTH AND WRIGHT. 

* UNTIL 10 PM CDT THIS EVENING

* ADDITIONAL THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF
  PRODUCING INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE
  POSSIBLE THROUGH THE AFTERNOON. HEAVY RAIN FALLING OVER THE
  SAME LOCATION IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL 
  CREEKS AND STREAMS WILL BE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

IAZ026>028-036>039-072330-
/O.CON.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FRANKLIN-BUTLER-BREMER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...HAMPTON...PARKERSBURG...CLARKSVILLE...
SHELL ROCK...GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY...
WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER...
REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS
1027 AM CDT WED SEP 7 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF CENTRAL IOWA...NORTH CENTRAL IOWA AND NORTHEAST 
  IOWA...INCLUDING THE FOLLOWING AREAS...IN CENTRAL IOWA... 
  GRUNDY...HAMILTON AND HARDIN. IN NORTH CENTRAL IOWA...BUTLER 
  AND FRANKLIN. IN NORTHEAST IOWA...BLACK HAWK AND BREMER. 

* UNTIL 10 PM CDT THIS EVENING

* PERIODIC THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF PRODUCING
  INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE EXPECTED
  THROUGH THIS EVENING. HEAVY RAIN FALLING OVER THE SAME LOCATION
  IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL 
  CREEKS AND STREAMS WILL BE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

IAZ047>050-060>062-072330-
/O.CON.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BOONE-STORY-MARSHALL-TAMA-POLK-JASPER-POWESHIEK-
INCLUDING THE CITIES OF...BOONE...AMES...MARSHALLTOWN...TAMA...
TOLEDO...TRAER...DYSART...GLADBROOK...DES MOINES...NEWTON...
GRINNELL
1027 AM CDT WED SEP 7 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

THE FLASH FLOOD WATCH CONTINUES FOR

* A PORTION OF CENTRAL IOWA...INCLUDING THE FOLLOWING AREAS... 
  BOONE...JASPER...MARSHALL...POLK...POWESHIEK...STORY AND TAMA. 

* UNTIL 10 PM CDT THIS EVENING

* PERIODIC THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF PRODUCING
  INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE EXPECTED
  THROUGH THIS EVENING. HEAVY RAIN FALLING OVER THE SAME LOCATION
  IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL 
  CREEKS AND STREAMS WILL BE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

PODRAZIK

550 
WGUS63 KDMX 072044
FFADMX

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE DES MOINES IA
344 PM CDT WED SEP 7 2016

...HEAVY RAIN THREAT CONTINUES INTO THIS EVENING OVER EAST CENTRAL
IOWA...

.ADDITIONAL THUNDERSTORMS ARE EXPECTED THROUGH THE EVENING ACROSS
EAST CENTRAL IOWA THIS EVENING. LOCALLY HEAVY RAIN CAN BE EXPECTED
AS INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE POSSIBLE. 

IAZ007-017-025>027-036-037-047-048-060-072145-
/O.CAN.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WORTH-CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-HAMILTON-HARDIN-BOONE-
STORY-POLK-
INCLUDING THE CITIES OF...NORTHWOOD...MANLY...MASON CITY...
CLEAR LAKE...EAGLE GROVE...CLARION...BELMOND...HAMPTON...
PARKERSBURG...CLARKSVILLE...SHELL ROCK...GREENE...APLINGTON...
ALLISON...DUMONT...WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...
BOONE...AMES...DES MOINES
344 PM CDT WED SEP 7 2016

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL IOWA AND NORTH
CENTRAL IOWA HAS BEEN CANCELLED. ALTHOUGH ADDITIONAL SHOWERS AND
THUNDERSTORMS ARE POSSIBLE TONIGHT...THE THREAT FOR HEAVY RAIN
HAS ENDED.

$$

IAZ074-075-080300-
/O.EXA.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION-MAHASKA-
INCLUDING THE CITIES OF...PELLA...KNOXVILLE...OSKALOOSA
344 PM CDT WED SEP 7 2016

...FLASH FLOOD WATCH IN EFFECT UNTIL 10 PM CDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE A PORTION OF SOUTH CENTRAL IOWA...
   INCLUDING THE FOLLOWING AREAS...MAHASKA AND MARION. 

* UNTIL 10 PM CDT THIS EVENING

* ADDITIONAL THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF
  PRODUCING INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE
  POSSIBLE THROUGH THE EVENING. HEAVY RAIN FALLING OVER THE SAME
  LOCATION IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL 
  CREEKS AND STREAMS WILL BE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

IAZ028-038-039-049-050-061-062-080300-
/O.CON.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BREMER-GRUNDY-BLACK HAWK-MARSHALL-TAMA-JASPER-POWESHIEK-
INCLUDING THE CITIES OF...WAVERLY...GRUNDY CENTER...REINBECK...
CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS...
MARSHALLTOWN...TAMA...TOLEDO...TRAER...DYSART...GLADBROOK...
NEWTON...GRINNELL
344 PM CDT WED SEP 7 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF CENTRAL IOWA AND NORTHEAST IOWA...INCLUDING THE 
  FOLLOWING AREAS...IN CENTRAL IOWA...GRUNDY...JASPER... 
  MARSHALL...POWESHIEK AND TAMA. IN NORTHEAST IOWA...BLACK HAWK 
  AND BREMER. 

* UNTIL 10 PM CDT THIS EVENING

* ADDITIONAL THUNDERSTORMS WITH VERY HEAVY RAIN CAPABLE OF
  PRODUCING INTENSE RAINFALL RATES OF 1 TO 3 INCHES PER HOUR ARE
  POSSIBLE THROUGH THE EVENING. HEAVY RAIN FALLING OVER THE SAME
  LOCATION IN A SHORT TIME FRAME MAY LEAD TO FLASH FLOODING.

* ROADS MAY BECOME COVERED WITH WATER...AND FAST RISES ON LOCAL 
  CREEKS AND STREAMS WILL BE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

KLP

272 
WGUS63 KDMX 080306
FFADMX

FLOOD WATCH
NATIONAL WEATHER SERVICE DES MOINES IA
1006 PM CDT WED SEP 7 2016

IAZ028-038-039-049-050-061-062-074-075-080415-
/O.EXP.KDMX.FF.A.0011.000000T0000Z-160908T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BREMER-GRUNDY-BLACK HAWK-MARSHALL-TAMA-JASPER-POWESHIEK-MARION-
MAHASKA-
INCLUDING THE CITIES OF...WAVERLY...GRUNDY CENTER...REINBECK...
CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS...
MARSHALLTOWN...TAMA...TOLEDO...TRAER...DYSART...GLADBROOK...
NEWTON...GRINNELL...PELLA...KNOXVILLE...OSKALOOSA
1006 PM CDT WED SEP 7 2016

...FLASH FLOOD WATCH HAS EXPIRED...

THE FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL IOWA...NORTHEAST
IOWA AND SOUTH CENTRAL IOWA HAS EXPIRED. ALTHOUGH SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE OVER THE AREA FOR
THE NEXT COUPLE OF HOURS...COVERAGE WILL NOT BE ENOUGH FOR A FLASH
FLOOD THREAT. THE WATCH WAS ALLOWED TO EXPIRE.

$$

FAB

Area Forecast Discussion
National Weather Service Des Moines IA
1253 PM CDT Tue Sep 6 2016

...Updated Aviation Discussion...

.SHORT TERM.../Today/
Issued at 334 AM CDT Tue Sep 6 2016

Main concerns today on temps/humidity and precip chances. Elongated
area of low pressure remains in place off to the west/northwest of
the CWA with the sfc trough axis/meandering frontal boundary slowly
sinking into the northern CWA today. Majority of activity has stayed
off to the west/northwest thus far tonight closer to the frontal
boundary and expect it to stay that way through much of the morning.
Push of stronger theta-e advection remains across far northern IA
and southern MN. WAA in place across the CWA today, and increasing
humidity with dewpoints already in the 70s across the state and
expected to increase a bit more today with the strong southwesterly
to southerly flow in the low levels. This will push highs into the
mid 80s to around 90 across the CWA, and resultant heat indices into
the 90s to around 100. Slightly cooler conditions expected in the
furthest northern tiers near MN where clouds and potential precip to
keep temps cooler in the lower to mid 80s.

A few storms may clip the northern/northwestern portions of the CWA
through mid-morning, but then expect the activity to mainly be
across MN into the early afternoon hours. Otherwise as boundary
slowly sinks southward and the potential for an outflow boundary
across the northern CWA from the AM convection could see some
redevelopment toward mid/late afternoon across the northern CWA.
Thus backed off on pops across the central/southern CWA and kept the
higher pops toward late afternoon for the north. Deep layer shear
still decent at around 40 kts which is more than we have seen for
much of the convective season. CAPE of around 2500 to 3000 J/kg
expected, therefore the severe potential still exists across the
north. Wind still looks like the main severe threat for northern IA
given the low level shear profile not the best for tornadic
activity, and the deep layer shear suggesting more multicellular
activity across IA. Hail somewhat concern given the CAPE/shear,
however freezing levels higher and PWATs exceptional for this time
of year, therefore find that a secondary threat as well with heavy
rain a factor.

.LONG TERM.../Tonight through Monday/
Issued at 334 AM CDT Tue Sep 6 2016

A large western U.S. trough will dominate our weather through the
work week. Several lobes of vorticity will round the base of this
trough and move over Iowa and surrounding states. The first such
wave will move through late Wednesday, the second late Thursday,
then the third and strongest around Friday or Friday night. A
nearly stationary low-level frontal boundary draped across
southern Minnesota down to central Nebraska is providing a focus
for convection early this morning and will likely do so again
tonight, but further southeast into northern and western Iowa. 500
mb height changes will be largely neutral tonight and low-level
flow and shear are weak, but there is sufficient instability to
justify a slight risk in these areas as outlined by SPC. There is
also a significant magnitude of atmospheric moisture and most
forecast models indicate the development of another nocturnal low-
level jet and associated enhanced moisture transport, so there is
some threat of heavy rainfall. However, steering flow will keep
discrete cells moving at a good clip and the weak low-level flow
will ensure progressive outflow boundaries somewhat mitigating a
training threat. In addition, the antecedent conditions indicate
that it will be very difficult for even heavy rainfall to result
in significant impacts, especially falling in our flatter areas
and not expected to be widespread in nature. Therefore no flood
watches have been issued at this time.

On Wednesday afternoon and evening as the aforementioned first
shortwave rounds the base of the western U.S. trough it will kick
off more thunderstorms across Iowa, with the surface front
continuing to provide a focus mechanism. Synoptic forcing for
ascent will be stronger during this time, but instability may be
somewhat limited despite the peak heating time frame, depending on
the degree of convective overturning from overnight and morning
storms. The mid-level trough moving through will then cause the
surface front to surge eastward and clear our area out by Thursday
morning.

A surface high pressure area will move quickly by on Thursday,
providing sunny and cooler weather, however the second shortwave
trough will then approach around Thursday evening. The GFS keeps
any significant convection associated with this feature tied to
the surface front will to our south across Missouri. However, the
ECMWF and NAM retreat the boundary northward across Iowa and also
develop storms northwest of the front, which is reasonable given
the strong forcing associated with the shortwave. Confidence in
these details is somewhat dependent on the evolution of the first
system on Wednesday, but still feel 40-50 POPs are justified for
Thursday evening/night.

The third and most powerful vorticity maximum rounding the 500 mb
trough will finally push it eastward and break the blocking
pattern toward the end of the work week. This will cause what
appears to be a true autumnal cold front to surge across Iowa
around Friday night. Ahead of and along the front thunderstorms
will be likely, especially if the timing lines up around peak
heating on Friday afternoon/evening. It appears that instability
may be somewhat seasonally limited, but the strong forcing
associated with the mid/upper trough as well as robust flow fields
would seem to support some severe weather threat, primarily in the
form of straight-line winds. We will be monitoring this potential
during the coming week.

From Friday night through early next week, including the entire
weekend, cool and mostly clear conditions are forecast. Meanwhile
another western U.S. trough will rebuild by Monday and there are
indications of another round of thunderstorms and strong frontal
passage somewhere around next Tuesday.

&&

.AVIATION.../For the 18Z TAFS through 18Z Wednesday afternoon/
Issued at 1250 PM CDT Tue Sep 6 2016

Persistent MVFR ceilings look impact mainly FOD and possibly MCW
this afternoon into the evening. Anticipating convection to
initiate past 22z this afternoon and continue through much of the
evening. Have MVFR to IFR visibility tonight towards Wednesday
morning, more confident to keep these conditions going for an
extended time frame than sparse out a potential break. Additional
storms continue Wednesday morning, more likely further south
affecting DSM-ALO-OTM.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...None.

&&

SHORT TERM...Beerends
LONG TERM...Lee
AVIATION...Podrazik

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
522 AM CDT TUE SEP 6 2016

IAZ004>007-015>017-023>028-033>039-044>048-057-058-071100-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE-
BOONE-STORY-AUDUBON-GUTHRIE-
522 AM CDT TUE SEP 6 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY AT INTERVALS TODAY AND TONIGHT. SEVERE
WEATHER MAY BE POSSIBLE AT TIMES...WITH LARGE HAIL AND STRONG
WINDS THE PRIMARY THREATS. A FEW AREAS OF HEAVY RAINFALL ARE ALSO
EXPECTED AND MAY LEAD TO LOCALIZED FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WILL REMAIN LIKELY ON WEDNESDAY BEFORE ENDING
WEDNESDAY NIGHT. A FEW OF THESE STORMS COULD BE STRONG TO SEVERE
WITH GUSTY WINDS THE PRIMARY THREAT. ADDITIONAL THUNDERSTORMS ARE
FORECAST BETWEEN THURSDAY NIGHT AND FRIDAY NIGHT...AND AGAIN
AROUND NEXT MONDAY. THE SEVERE WEATHER THREAT IS UNCERTAIN AT THIS
TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TUESDAY AFTERNOON THROUGH
WEDNESDAY.

IAZ060-071100-
POLK-
522 AM CDT TUE SEP 6 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

HEAT INDEX VALUES WILL TOP OUT AROUND 100 DEGREES THIS AFTERNOON.

THUNDERSTORM CHANCES WILL RETURN TO THE FORECAST TONIGHT. A FEW
STORMS COULD BE STRONG TO SEVERE WITH GUSTY WINDS THE PRIMARY
THREAT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WILL REMAIN LIKELY ON WEDNESDAY BEFORE ENDING
WEDNESDAY NIGHT. A FEW OF THESE STORMS COULD BE STRONG TO SEVERE
WITH GUSTY WINDS THE PRIMARY THREAT. ADDITIONAL THUNDERSTORMS ARE
FORECAST BETWEEN THURSDAY NIGHT AND FRIDAY NIGHT...AND AGAIN
AROUND NEXT MONDAY. THE SEVERE WEATHER THREAT IS UNCERTAIN AT THIS
TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

IAZ049-050-059-061-062-070>075-081>086-092>097-071100-
MARSHALL-TAMA-DALLAS-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-
MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-
RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
522 AM CDT TUE SEP 6 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORM CHANCES WILL RETURN TO THE FORECAST TONIGHT. A FEW
STORMS COULD BE STRONG TO SEVERE WITH GUSTY WINDS THE PRIMARY
THREAT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WILL REMAIN LIKELY ON WEDNESDAY BEFORE ENDING
WEDNESDAY NIGHT. A FEW OF THESE STORMS COULD BE STRONG TO SEVERE
WITH GUSTY WINDS THE PRIMARY THREAT. ADDITIONAL THUNDERSTORMS ARE
FORECAST BETWEEN THURSDAY NIGHT AND FRIDAY NIGHT...AND AGAIN
AROUND NEXT MONDAY. THE SEVERE WEATHER THREAT IS UNCERTAIN AT THIS
TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

LEE