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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
426 AM CDT Sun Sep 22 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
230930-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
426 AM CDT Sun Sep 22 2019 /526 AM EDT Sun Sep 22 2019/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Significant Thunderstorm Risk...with an associated:
     Limited hail risk...up to dime size.
     Limited damaging wind risk...up to 60 mph.
  Significant Flooding Risk.
  Limited Non thunderstorm wind Risk.
  High Swim Risk

DISCUSSION...

Widespread showers and embedded thunderstorms are likely across
northern Illinois this morning, and then likely across the entire
outlook area this afternoon through late this evening. Heavy
rainfall will continue to support a threat for flash flooding,
along with renewed rises on area rivers into the upcoming week. A
Flash Flood Watch is in effect for locales along and west of I-57
through this evening.

A few strong to severe storms are possible this afternoon through
this evening, along and southeast of a line from from La Salle to
Oak Lawn. The main threat with the strongest storms will be wind
gusts to 60 mph, however, an isolated threat of tornadoes will
also exist.

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

Monday...
  High Swim Risk
Tuesday...
  Limited Severe Thunderstorm Risk.
Wednesday...
  Limited Thunderstorm Risk.
  Limited Non Thunderstorm Wind Risk.
Thursday through Saturday...
  Limited Thunderstorm Risk.

DISCUSSION:

Strong northwest winds will produce hazardous swimming conditions
along Indiana Lake Michigan beaches Monday. Thunderstorm chances
increase by mid week, with the highest chances for storms expected
Tuesday night into Wednesday.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed this afternoon and evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the northeast at 35 to 40 mph.

$$



Flood Warning

Flood Statement
National Weather Service Chicago/Romeoville IL
932 AM CDT Sun Sep 22 2019

...The Flood Warning continues for the following rivers in
Illinois...

  Des Plaines River near Gurnee affecting Lake County
  Des Plaines River at Lincolnshire affecting Lake County
  Des Plaines River near Des Plaines affecting Cook County
  Fox River at Dayton affecting La Salle County
  Des Plaines River near Russell affecting Lake County
  Fox River at Algonquin Lock & Dam tailwater affecting Kane and
  McHenry Counties
  Fox River at Montgomery affecting Kane and Kendall Counties

The following forecasts are based on observed precipitation as well
as forecast precipitation 24-48 hours into the future.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

ILC031-230432-
/O.EXT.KLOT.FL.W.0151.190924T0000Z-190926T0600Z/
/DSPI2.1.ER.190924T0000Z.190925T0000Z.190926T0000Z.NO/
932 AM CDT Sun Sep 22 2019

The Flood Warning continues for
  The Des Plaines River near Des Plaines, or from Palatine Road in
  Prospect Heights downstream to Irving Park Road in Chicago.
* from Monday evening to late Wednesday night.
* At  845 AM Sunday the stage was 14.4 feet.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by Monday evening and continue to
  rise to near 15.4 feet by Tuesday evening.
* Impact...At 15.0 feet...Buildings threatened at Methodist Campground
  in Des Plaines. Forest preserve roadways are threatened.

&&

LAT...LON 4212 8794 4212 8784 4197 8780 4196 8790


$$




Flash Flood Watch

Flood Watch
National Weather Service Chicago IL
342 AM CDT Sun Sep 22 2019

...Heavy Rain to Become More Widespread this Morning...

ILZ003>006-008-010>014-019>022-221800-
/O.CON.KLOT.FF.A.0007.000000T0000Z-190923T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, Lake in the Hills, McHenry, Woodstock, Cary, Waukegan,
Buffalo Grove, North Chicago, Highland Park, Mundelein, Gurnee,
Round Lake Beach, Rochelle, Oregon, Mount Morris, Byron, Polo,
Dixon, DeKalb, Sycamore, Aurora, Elgin, Naperville, Wheaton,
Downers Grove, Elmhurst, Lombard, Carol Stream, Addison, Chicago,
Humboldt Park, Hyde Park, Lakeview, Lincoln Park, Logan Square,
Navy Pier, Ottawa, Streator, Peru, La Salle, Mendota, Marseilles,
Oswego, Boulder Hill, Yorkville, Plano, Morris, Coal City,
Minooka, Joliet, and Bolingbrook
342 AM CDT Sun Sep 22 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

The Flash Flood Watch continues for

* Portions of north central Illinois and northeast Illinois,
  including the following areas, in north central Illinois,
  Boone, De Kalb, La Salle, Lee, Ogle, and Winnebago. In
  northeast Illinois, Cook, DuPage, Grundy, Kane, Kendall, Lake
  IL, McHenry, and Will.

* Through late tonight

* Showers and thunderstorms are expected to increase in coverage
  across northern Illinois through mid morning. The stronger
  storms will be capable of producing heavy rainfall at times,
  with rates of one to two inches per hour. Additional rainfall
  totals of 2 to 3 inches with locally higher amounts are expected
  by this evening before the rain tapers from west to east. These
  expected totals include some locations that received 1 to 2
  inches on Saturday. The heavy rainfall over a short duration and
  over locations that have experienced recent heavy rainfall may
  lead to flash flooding.

* The heavy rainfall will lead to additional river rises,
  potentially sharp rises, into the upcoming week, especially
  across the Des Plaines, Fox, Pecatonica, and Rock river basins.

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.

&&

$$



Flood Advisory

Flood Advisory
National Weather Service Chicago/Romeoville IL
848 PM CDT Sat Sep 21 2019

...The National Weather Service in Chicago has issued a Flood
Advisory for the Des Plaines River...East Branch Du Page River...

  Des Plaines River at River Forest affecting Cook County
  Des Plaines River at Riverside affecting Cook County
  East Branch Du Page River at Bolingbrook affecting Will County

The following forecasts are based on observed precipitation as well
as forecast precipitation 24-48 hours into the future.

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.

&&

ILC031-221347-
/O.NEW.KLOT.FL.Y.0208.190922T0148Z-190926T0000Z/
/RVFI2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
848 PM CDT Sat Sep 21 2019

The National Weather Service in Chicago has issued a
* Flood Advisory for
  The Des Plaines River at River Forest, or from Irving Park Road in
  Chicago downstream to Roosevelt Road in Forest Park.
* until Wednesday evening.
* At  800 PM Saturday the stage was 11.5 feet.
* Action stage is 13.0 feet.
* Flood stage is 16.0 feet.
* Forecast...The river will rise to near 13.1 feet by Wednesday
  morning.


&&

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


$$



Flood Advisory

Flood Advisory
National Weather Service Chicago/Romeoville IL
848 PM CDT Sat Sep 21 2019

...The National Weather Service in Chicago has issued a Flood
Advisory for the Des Plaines River...East Branch Du Page River...

  Des Plaines River at River Forest affecting Cook County
  Des Plaines River at Riverside affecting Cook County
  East Branch Du Page River at Bolingbrook affecting Will County

The following forecasts are based on observed precipitation as well
as forecast precipitation 24-48 hours into the future.

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.

&&

ILC031-221347-
/O.NEW.KLOT.FL.Y.0209.190922T0148Z-190924T0600Z/
/RVRI2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
848 PM CDT Sat Sep 21 2019

The National Weather Service in Chicago has issued a
* Flood Advisory for
  The Des Plaines River at Riverside, or from Roosevelt Road in Forest
  Park downstream to Hodgkins.
* until late Monday night.
* At  745 PM Saturday the stage was 5.4 feet.
* Action stage is 7.0 feet.
* Flood stage is 7.5 feet.
* Forecast...The river will rise to near 7.0 feet by Monday morning.
* Impact...At 7.0 feet...Water begins to overflow banks in adjacent
  forest preserve areas.

&&

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


$$



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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