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4 products issued by NWS for: Manchester IA
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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
458 PM CDT Fri Jul 21 2017

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-221000-
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-
458 PM CDT Fri Jul 21 2017

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...LATE THIS AFTERNOON AND TONIGHT

Thunderstorms will continue to develop and move across portions of
the Outlook Area this afternoon and evening. The environment is
conducive for severe weather with damaging winds, tornadoes, flash
flooding and large hail as the main threats. A few supercell
thunderstorms are possible this afternoon and evening, before one
or more bow echoes develop and move across the area later this
evening. Some of these storms could be fast moving. Later tonight,
storms are expected to be slower moving, and possibly move across
the same areas. This may produce localized flash flooding. A Flash
Flood Watch is in effect tonight for areas generally along and
north of the Interstate 80 corridor.

The Rock and Pecatonica rivers are experiencing, or will
experience moderate to major flooding. Please see the latest
River Flood Statements and Flood Warnings for details.

Hot and humid weather will continue into this evening, with
heat indices up to 110 degrees south of Highway 30. Excessive
heat warnings and heat advisories remain in effect for most of
the outlook area through Saturday.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Additional rounds of thunderstorms are possible Saturday,
especially along and south of the Highway 34 corridor. Then
isolated thunderstorms are possible on Sunday afternoon. Severe
weather is possible for both these periods, but confidence on
timing and favored locations remains low. If severe storms do
occur Saturday, the main threats would be damaging winds and
flash flooding. Large hail may be more of a threat on Sunday
afternoon.

Hot and muggy conditions will continue Saturday, with afternoon
heat indices up to 110 degrees south of Highway 30.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely this afternoon through the early
morning hours.

$$

12




Severe Thunderstorm Watch

WATCH COUNTY NOTIFICATION FOR WATCH 429
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
953 PM CDT FRI JUL 21 2017

IAC011-019-031-045-055-061-097-105-113-139-163-ILC011-015-073-085-
131-155-161-177-195-220500-
/O.CON.KDVN.SV.A.0429.000000T0000Z-170722T0500Z/

SEVERE THUNDERSTORM WATCH 429 REMAINS VALID UNTIL MIDNIGHT CDT
TONIGHT FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 9 COUNTIES

IN NORTH CENTRAL ILLINOIS

BUREAU                PUTNAM

IN NORTHWEST ILLINOIS

CARROLL               HENRY IL              JO DAVIESS
MERCER                ROCK ISLAND           STEPHENSON
WHITESIDE

IN IOWA THIS WATCH INCLUDES 11 COUNTIES

IN EAST CENTRAL IOWA

BENTON                CEDAR                 CLINTON
JACKSON               JONES                 LINN
MUSCATINE             SCOTT

IN NORTHEAST IOWA

BUCHANAN              DELAWARE              DUBUQUE

THIS INCLUDES THE CITIES OF ALEDO, ANAMOSA, BETTENDORF,
CEDAR RAPIDS, CLINTON, CREDIT ISLAND, DAVENPORT, DUBUQUE,
FREEPORT, GALENA, GENESEO, HENNEPIN, INDEPENDENCE, MANCHESTER,
MAQUOKETA, MOLINE, MOUNT CARROLL, MUSCATINE, PRINCETON,
ROCK ISLAND, STERLING, TIPTON, AND VINTON.

$$

NICHOLS




Flood Watch

Flood Watch
National Weather Service Quad Cities IA/IL
932 PM CDT Fri Jul 21 2017

...The Flood Watch continues for the following rivers in Iowa...

  Maquoketa River at Manchester Hwy 20 affecting Delaware and Jones
  Counties
  Maquoketa River near Maquoketa affecting Jackson County
  Wapsipinicon River at Independence affecting Buchanan and Linn
  Counties

This Flood Watch is based on observed and predicted rainfall over
the next 24 hours.

At this time there is limited confidence associated with rainfall
amounts and the location of predicted rainfall.

If rainfall in the basin is less than predicted, the forecast river
stage may not be reached. Conversely, if rainfall is more than
predicted the river may crest higher.

As the forecast becomes more certain, this watch will either be
upgraded to a warning or cancelled.

IAZ041-053-222031-
/O.CON.KDVN.FL.A.0070.170722T1100Z-170724T1500Z/
/MCHI4.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
932 PM CDT Fri Jul 21 2017

The Flood Watch continues for
  The Maquoketa River at Manchester Hwy 20
* Until Saturday.
* At  9:15 PM Friday the stage was 4.6 feet...and rising.
* Flood stage is 14.0 feet.
* Minor flooding is possible.
* Forecast...Rise above flood stage Saturday morning...and continue
  rising to 15.2 feet Saturday morning. Fall below flood stage
  Saturday.
* This forecast is based on routed flow from upstream in combination
  with forecast rainfall. Consequently there is limited confidence
  in the river reaching flood stage.

&&

LAT...LON 4264 9157 4218 9090 4207 9090 4221 9119
      4255 9161

$$



Flash Flood Watch

Flood Watch
National Weather Service Quad Cities IA IL
310 PM CDT Fri Jul 21 2017

...Heavy rainfall and flash flooding possible from late this
afternoon through Saturday Morning...

.Additional rounds of heavy rain will affect portions of eastern
Iowa into northwestern Illinois from late this afternoon through
Saturday morning. After heavy rain producing thunderstorms impact
the area late this afternoon and evening, additional late night
storms may develop and move along the same areas. These swaths of
heavy rain, coupled with the already saturated ground, could
result in flash flooding across portions of the watch area.

IAZ040>042-051>054-063>068-ILZ009-015>018-220415-
/O.EXA.KDVN.FF.A.0004.170721T2100Z-170722T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Whiteside-Rock Island-Henry IL-
Bureau-Putnam-
Including the cities of Independence, Manchester, Dubuque,
Vinton, Cedar Rapids, Anamosa, Maquoketa, Marengo, Iowa City,
Tipton, Clinton, Muscatine, Davenport, Bettendorf, Sterling,
Moline, Rock Island, Geneseo, Princeton, and Hennepin
310 PM CDT Fri Jul 21 2017

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

The National Weather Service in Quad Cities has expanded the

* Flash Flood Watch to include portions of Illinois and Iowa,
  including the following areas, in Illinois, Bureau, Henry IL,
  Putnam, Rock Island, and Whiteside. In Iowa, Benton, Buchanan,
  Cedar, Clinton, Delaware, Dubuque, Iowa, Jackson, Johnson,
  Jones, Linn, Muscatine, and Scott.

* Through Saturday morning

* Heavy rainfall of 1 to 3 inches with locally higher amounts
  possible.

* Impacts could include flooded roads and intersections, river
  flooding, and possible rock and mud slides in hilly terrain.

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.

&&

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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