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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
404 PM CDT Sun Sep 22 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
232115-
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-
404 PM CDT Sun Sep 22 2019 /504 PM EDT Sun Sep 22 2019/

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

.DAY ONE...Later This Afternoon and Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk...with an associated:
     Limited Tornado risk.
     Limited damaging wind risk...up to 60 mph.
  Limited Flooding Risk.
  Limited Non Thunderstorm Wind Risk.
  High Swim Risk overnight

DISCUSSION...

Rain, at times heavy and possibly accompanied with lightning,
will taper to scattered showers by early to mid evening. Localized
flooding is possible through that time. A strong storm or two
cannot be ruled out through early this evening, mainly east of
Interstate 55.

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

Monday...
  High Swim Risk
Tuesday Night...
  Limited Severe Thunderstorm Risk.
Wednesday through Saturday...
  Limited Thunderstorm Risk.

DISCUSSION:

Area rivers, especially across far northern Illinois, will be
on the rise early this week.

Strong northwest winds will produce hazardous swimming conditions
along Porter County Indiana Lake Michigan beaches Monday.

Thunderstorm chances increase Tuesday night into early Wednesday.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation is appearing unlikely at this time.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the northeast at 40 to 50 mph.

$$



Flash Flood Watch

Flood Watch
National Weather Service Chicago IL
256 PM CDT Sun Sep 22 2019

...Heavy Rain to End Early to Mid Evening...

ILZ004>006-011>014-020-022-230300-
/O.EXT.KLOT.FF.A.0007.000000T0000Z-190923T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone-McHenry-Lake IL-De Kalb-Kane-DuPage-Cook-Kendall-Will-
Including the cities of Belvidere, Crystal Lake, Algonquin,
Lake in the Hills, McHenry, Woodstock, Cary, Waukegan,
Buffalo Grove, North Chicago, Highland Park, Mundelein, Gurnee,
Round Lake Beach, 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, Oswego, Boulder Hill, Yorkville, Plano,
Joliet, and Bolingbrook
256 PM CDT Sun Sep 22 2019

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

The Flash Flood Watch is now in effect for

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

* Until 10 PM CDT this evening

* Rain, heavy at times, will end by early to mid evening,
  tapering to scattered showers or even just ending completely in
  places. Before that time, the rain may be heavy enough on wet
  ground to result in localized 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.

&&

$$

MTF



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


$$




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Silver Spring, MD 20910
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