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6 products issued by NWS for: Chicago IL
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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
532 AM CDT Sun Apr 30 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
011045-
Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane-
DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston-
Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton-
532 AM CDT Sun Apr 30 2017 /632 AM EDT Sun Apr 30 2017/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...Today and Tonight.

WEATHER HAZARDS EXPECTED:
  Elevated Thunderstorm Risk...with an associated:
    Elevated Tornado Risk.
    Elevated Hail Risk...up to quarter size.
    Elevated Thunderstorm Wind Damage Risk...up to 70 MPH.
    Elevated Flooding Risk.

DISCUSSION:

A strong and slow moving storm system will continue to impact the
region into tonight. As a result, periods of moderate rain to
briefly heavy rainfall will continue at times today into this
evening. There is also a concern for severe thunderstorm
development over portions of the region late this afternoon into
the evening as a cold front approaches from the west. While there
is uncertainty on the extent of thunderstorm development this
afternoon, the atmosphere will be supportive of severe
thunderstorms should they develop. The severe threats would
include the possibility for tornadoes and strong damaging wind
gusts. At this time, it appears the main threat for severe storms
may be along and south of the interstate 80 corridor.


In addition...flooding is expected along portions of area rivers.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Limited Non Thunderstorm Wind Risk.


In addition...flooding is expected along area rivers into early
next week.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed late this afternoon into this evening.

GENERAL STORM MOTION OF THE DAY:

Moving to the northeast at 50 to 55 MPH.

&&

$$



Flash Flood Watch

Flood Watch
National Weather Service Chicago/Romeoville IL
445 AM CDT Sun Apr 30 2017

ILZ014-021>023-032-033-039-INZ001-002-010-011-019-301745-
/O.CON.KLOT.FF.A.0001.000000T0000Z-170501T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-Lake IN-Porter-
Newton-Jasper-Benton-
Including the cities of Chicago, Morris, Joliet, Kankakee,
Pontiac, Watseka, Paxton, Gary, Valparaiso, Morocco, Rensselaer,
and Fowler
445 AM CDT Sun Apr 30 2017 /545 AM EDT Sun Apr 30 2017/

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

The Flash Flood Watch continues for

* Portions of Illinois and Indiana, including the following
  areas, in Illinois, Cook, Ford, Grundy, Iroquois, Kankakee,
  Livingston, and Will. In Indiana, Benton, Jasper, Lake IN,
  Newton, and Porter.

* Through Monday morning.

* Periods of moderate to occasionally heavy rainfall are
  expected through this evening. Additional rainfall amounts of
  1 to 3 inches, with locally higher amounts are likely across
  the area. Given the rain that has already fallen, runoff from
  additional heavy rain may result in 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.

&&

$$

KJB




Flood Advisory

Flood Advisory
National Weather Service Chicago/Romeoville IL
1045 PM CDT Sat Apr 29 2017

...The Flood Advisory continues for the North Branch Chicago River...

  North Branch Chicago River at Chicago Albany Ave affecting Cook
  County

.Rainfall of one to nearly two inches fell across the basin Saturday
afternoon and evening. This will likely lead to significant rises on
the North Branch Chicago River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...If you encounter a flooded roadway...turn around and
find an alternate route.

Additional information can be found at weather.gov/chicago.

&&

ILC031-301545-
/O.EXT.KLOT.FL.Y.0085.000000T0000Z-170501T2330Z/
/NBAI2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
1045 PM CDT Sat Apr 29 2017

The Flood Advisory continues for
  The North Branch Chicago River at Chicago Albany Ave
* until Monday evening.
* At 1000 PM Saturday the stage was 2.7 feet.
* Action stage is 5.0 feet.
* Flood stage is 7.0 feet.
* Forecast...The river will rise to near 5.4 feet by early Monday
  morning.

&&

LAT...LON 4198 8767 4194 8765 4189 8771 4194 8774
      4196 8781 4203 8775

$$




Flood Watch

Flood Watch
National Weather Service Chicago/Romeoville IL
926 PM CDT Sat Apr 29 2017

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

  Des Plaines River near Des Plaines affecting Cook County
  Des Plaines River at River Forest affecting Cook County
  Des Plaines River at Riverside affecting Cook County
  Du Page River near Plainfield affecting Will County
  Du Page River at Shorewood affecting Will County
  Iroquois River at Rensselaer affecting Jasper County
  Iroquois River near Foresman affecting Newton County
  Iroquois River at Iroquois affecting Iroquois County
  Kankakee River near Wilmington affecting Grundy and Will Counties
  Mazon River near Coal City affecting Grundy County
  Sugar Creek at Milford affecting Iroquois County
  Vermilion River at Pontiac affecting Livingston County
  Vermilion River near Leonore affecting La Salle County
  W Br Du Page River near Warrenville affecting Du Page County
  Des Plaines River near Russell affecting Lake County
  Des Plaines River near Gurnee affecting Lake County
  Des Plaines River at Lincolnshire affecting Lake County
  Fox River at Algonquin Tailwater affecting Kane and McHenry
  Counties
  Iroquois River near Chebanse affecting Iroquois and Kankakee
  Counties
  Kankakee River at Shelby affecting Lake and Newton Counties

.Moderate to locally heavy rain fell over portions of the region
Saturday afternoon and evening, with the chance for additional
heavy rain Sunday and Sunday night. Rainfall forecasts are highly
uncertain and if even a little bit less rain than forecast occurs,
crests would be substantially lower than currently forecast and
flooding may not occur. Closely monitor updated forecasts.

ILZ014-301425-
/O.EXT.KLOT.FL.A.0012.170501T0000Z-170505T2330Z/
/DSPI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
926 PM CDT Sat Apr 29 2017

The Flood Watch continues for
  The Des Plaines River near Des Plaines
* from Sunday evening to Friday evening.
* At  8:45 PM Saturday the stage was 10.5 feet.
* Minor flooding is possible.
* Flood stage is 15.0 feet.
* Recent activity...Gage datum was changed by 10 feet on Nov 14 2014.
  Flood thresholds and flood impacts are now 10 feet higher than
  previous values.
* Forecast...Flood stage may be reached by Sunday evening.
* Impact...At 18.5 feet...Flood waters affect residential areas of Big
  Bend Drive, Mason Lane, River Road, and Howard.

&&

LAT...LON 4212 8784 4196 8780 4196 8790 4212 8794


$$



Flood Watch

Flood Watch
National Weather Service Chicago/Romeoville IL
926 PM CDT Sat Apr 29 2017

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

  Des Plaines River near Des Plaines affecting Cook County
  Des Plaines River at River Forest affecting Cook County
  Des Plaines River at Riverside affecting Cook County
  Du Page River near Plainfield affecting Will County
  Du Page River at Shorewood affecting Will County
  Iroquois River at Rensselaer affecting Jasper County
  Iroquois River near Foresman affecting Newton County
  Iroquois River at Iroquois affecting Iroquois County
  Kankakee River near Wilmington affecting Grundy and Will Counties
  Mazon River near Coal City affecting Grundy County
  Sugar Creek at Milford affecting Iroquois County
  Vermilion River at Pontiac affecting Livingston County
  Vermilion River near Leonore affecting La Salle County
  W Br Du Page River near Warrenville affecting Du Page County
  Des Plaines River near Russell affecting Lake County
  Des Plaines River near Gurnee affecting Lake County
  Des Plaines River at Lincolnshire affecting Lake County
  Fox River at Algonquin Tailwater affecting Kane and McHenry
  Counties
  Iroquois River near Chebanse affecting Iroquois and Kankakee
  Counties
  Kankakee River at Shelby affecting Lake and Newton Counties

.Moderate to locally heavy rain fell over portions of the region
Saturday afternoon and evening, with the chance for additional
heavy rain Sunday and Sunday night. Rainfall forecasts are highly
uncertain and if even a little bit less rain than forecast occurs,
crests would be substantially lower than currently forecast and
flooding may not occur. Closely monitor updated forecasts.

ILZ014-301425-
/O.EXT.KLOT.FL.A.0013.170430T1942Z-170504T1000Z/
/RVRI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
926 PM CDT Sat Apr 29 2017

The Flood Watch continues for
  The Des Plaines River at Riverside
* from Sunday afternoon to late Wednesday night.
* At  8:45 PM Saturday the stage was 4.3 feet.
* Moderate flooding is possible.
* Flood stage is 7.0 feet.
* Forecast...Flood stage may be reached by Sunday afternoon.
* Impact...At 8.5 feet...Damage begins to residences in vicinity of
  junction of Salt Creek and Des Plaines River.

&&

LAT...LON 4187 8777 4183 8776 4174 8780 4178 8791
      4184 8786 4186 8787

$$



Flood Watch

Flood Watch
National Weather Service Chicago/Romeoville IL
926 PM CDT Sat Apr 29 2017

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

  Des Plaines River near Des Plaines affecting Cook County
  Des Plaines River at River Forest affecting Cook County
  Des Plaines River at Riverside affecting Cook County
  Du Page River near Plainfield affecting Will County
  Du Page River at Shorewood affecting Will County
  Iroquois River at Rensselaer affecting Jasper County
  Iroquois River near Foresman affecting Newton County
  Iroquois River at Iroquois affecting Iroquois County
  Kankakee River near Wilmington affecting Grundy and Will Counties
  Mazon River near Coal City affecting Grundy County
  Sugar Creek at Milford affecting Iroquois County
  Vermilion River at Pontiac affecting Livingston County
  Vermilion River near Leonore affecting La Salle County
  W Br Du Page River near Warrenville affecting Du Page County
  Des Plaines River near Russell affecting Lake County
  Des Plaines River near Gurnee affecting Lake County
  Des Plaines River at Lincolnshire affecting Lake County
  Fox River at Algonquin Tailwater affecting Kane and McHenry
  Counties
  Iroquois River near Chebanse affecting Iroquois and Kankakee
  Counties
  Kankakee River at Shelby affecting Lake and Newton Counties

.Moderate to locally heavy rain fell over portions of the region
Saturday afternoon and evening, with the chance for additional
heavy rain Sunday and Sunday night. Rainfall forecasts are highly
uncertain and if even a little bit less rain than forecast occurs,
crests would be substantially lower than currently forecast and
flooding may not occur. Closely monitor updated forecasts.

ILZ014-301425-
/O.EXT.KLOT.FL.A.0040.170502T0000Z-170504T0400Z/
/RVFI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
926 PM CDT Sat Apr 29 2017

The Flood Watch continues for
  The Des Plaines River at River Forest
* from Monday evening to Wednesday evening.
* At  9:00 PM Saturday the stage was 7.8 feet.
* Minor flooding is possible.
* Flood stage is 16.0 feet.
* Forecast...Flood stage may be reached by Monday evening.
* Impact...At 16.0 feet...Flood waters encroach Chicago Avenue

&&

LAT...LON 4196 8790 4197 8780 4187 8777 4186 8787


$$



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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