Warnings, Watches, Advisories, and Outlooks for Grayslake,Illinois
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Hydrologic Outlook for Grayslake, Illinois


Hydrologic Outlook
ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111-
141-197-201-INC007-073-089-111-127-201500-

Hydrologic Outlook
National Weather Service Chicago IL
106 PM CDT Thu Sep 19 2019 /206 PM EDT Thu Sep 19 2019/

...Heavy rainfall possible this weekend...

A slow-moving frontal system moving into the area by late this
weekend has the potential to produce heavy rainfall across the
area. Rainfall may lead to flooding, especially if occuring in
the Des Plaines, Fox, and Rock River Basins where recent heavy
rainfall has caused elevated water levels.

This flood potential exists from late this weekend through at
least early next week.

Over the last week, 2 to 6 inches of rainfall has occurred across
portions of far northern Illinois and southern Wisconsin, with
5 to 10 inches over the last two weeks. This wet weather has
contributed to elevated soil moisture and water levels.

Heavy rainfall is possible late this weekend as a cold front moves
into the area and interacts with moisture from the remnants of
Tropical Storm Imelda, which has recently moved inland over
southeast Texas. One to three inches of rainfall is possible
across portions of the region, but exact location and amounts of
rainfall are uncertain at this time. If heavy rainfall occurs,
rises on area rivers would be possible, including the possibility
of flooding if heavy rainfall occurs in areas with already
elevated water levels.

This outlook means that elevated water levels and potential
impacts are possible, but not yet certain. Persons should closely
monitor forecasts including the possibility of flood watches,
warnings, and advisories.





Hazardous Weather Outlook for Grayslake, Illinois


Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1205 PM CDT Thu Sep 19 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
201715-
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-
1205 PM CDT Thu Sep 19 2019 /105 PM EDT Thu Sep 19 2019/

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

.DAY ONE...This Afternoon and Tonight.


Weather hazards expected...

Limited Thunderstorm Risk.

DISCUSSION...

Isolated thunderstorms will be seen across north central Illinois
early this afternoon. Scattered thunderstorms are possible
tonight, mainly after midnight. Severe weather is not anticipated,
but locally heavy rainfall may occur.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.


Friday...
Limited Thunderstorm Risk.
Saturday...
Limited Severe Thunderstorm Risk.
Elevated Flooding Risk.
Sunday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Monday through Wednesday...
Limited Thunderstorm Risk.

DISCUSSION:

A period of potentially heavy rain is possible Saturday night into Sunday
as tropical moisture works its way northward ahead of a cold front.
This would lead to renewed concerns along area rivers that are still
in flood stage from heavy rain this past weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at 20 mph.




Flood Warning for Grayslake, Illinois


Flood Statement
National Weather Service Chicago/Romeoville IL
953 AM CDT Thu Sep 19 2019

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

Illinois...

Des Plaines River near Russell affecting Lake County
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 Montgomery affecting Kane and Kendall Counties
Fox River at Algonquin Lock & Dam tailwater affecting Kane and
McHenry 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.



ILC097-200453-
/O.EXT.KLOT.FL.W.0139.000000T0000Z-190923T0600Z/
/RUSI2.3.ER.190912T1945Z.190915T1115Z.190923T0000Z.NR/
953 AM CDT Thu Sep 19 2019

The Flood Warning continues for
The Des Plaines River near Russell, or from IL/WI state line
downstream to US-41 in Gurnee.
* until late Sunday night.
* At 930 AM Thursday the stage was 8.4 feet.
* Flood stage is 7.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by
Sunday evening.
* Impact...At 8.0 feet...Agricultural land and park lands flood. Water
approaches a few homes near railroad tracks.



LAT...LON 4251 8797 4250 8787 4247 8789 4239 8787
4239 8796 4247 8799





Flood Warning for Grayslake, Illinois


Flood Statement
National Weather Service Chicago/Romeoville IL
953 AM CDT Thu Sep 19 2019

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

Illinois...

Des Plaines River near Russell affecting Lake County
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 Montgomery affecting Kane and Kendall Counties
Fox River at Algonquin Lock & Dam tailwater affecting Kane and
McHenry 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.



ILC097-200453-
/O.EXT.KLOT.FL.W.0140.000000T0000Z-190923T1200Z/
/GUNI2.2.ER.190912T1215Z.190916T0730Z.190923T0600Z.NR/
953 AM CDT Thu Sep 19 2019

The Flood Warning continues for
The Des Plaines River near Gurnee, or from US-41 in Gurnee
downstream to Townline Road in Vernon Hills.
* until Monday morning.
* At 930 AM Thursday the stage was 9.3 feet.
* Flood stage is 7.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by
early Monday morning.
* Impact...At 9.5 feet...Outside lanes of IL-132 (Grand Avenue)
inundated near Peterson Park.



LAT...LON 4239 8796 4239 8787 4230 8791 4224 8788
4224 8797 4230 8800





Flood Warning for Grayslake, Illinois


Flood Statement
National Weather Service Chicago/Romeoville IL
953 AM CDT Thu Sep 19 2019

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

Illinois...

Des Plaines River near Russell affecting Lake County
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 Montgomery affecting Kane and Kendall Counties
Fox River at Algonquin Lock & Dam tailwater affecting Kane and
McHenry 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.



ILC097-200453-
/O.EXT.KLOT.FL.W.0142.000000T0000Z-190922T0000Z/
/LDRI2.2.ER.190913T1000Z.190916T1330Z.190921T1800Z.NR/
953 AM CDT Thu Sep 19 2019

The Flood Warning continues for
The Des Plaines River at Lincolnshire, or from Townline Road in
Libertyville downstream to Palatine Road in Prospect Heights.
* until Saturday evening.
* At 845 AM Thursday the stage was 14.1 feet.
* Flood stage is 12.5 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by
Saturday afternoon.
* Impact...At 14.0 feet...Water threatens Lincolnshire Dr at Wiltshire
Ln. Residences are threatened east of the river just south of IL-22
(Half-Day Rd).



LAT...LON 4224 8797 4224 8788 4212 8784 4212 8794





Flood Warning for Grayslake, Illinois


Flood Statement
National Weather Service Milwaukee/Sullivan WI
948 AM CDT Thu Sep 19 2019

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

Illinois...Wisconsin...

Fox River Near New Munster affecting Lake and Kenosha Counties
Pecatonica River At Martintown affecting Green County



ILC097-WIC059-200247-
/O.EXT.KMKX.FL.W.0069.000000T0000Z-190920T1800Z/
/NMSW3.2.ER.190913T1642Z.190915T0315Z.190920T1200Z.NO/
948 AM CDT Thu Sep 19 2019

The Flood Warning continues for
The Fox River Near New Munster.
* At 9:00 AM Thursday the stage was 11.4 feet.
* Flood stage is 11.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by
tomorrow morning.
* Impact...At 11.4 feet...There are about 2 inches of water over 77th
Street in the Town of Wheatland area. Floodwaters are near some
homes along Highway W in the Village of Salem Lakes area.



River forecasts are available for some but not all river gaging
locations. The 7 day river forecast takes into account past
precipitation, soil moisture conditions, and predicted
precipitation for the basin. Precipitation is for the next 24 hours
in the future from April through September and for 48 hours in the
future from October through March.

(stages in ft.) Bank- Latest Forecast stages
- Flood full observed ...for 6 pm...
Location stage stage stage/time Thu Fri Sat Sun
New Munster 11.0 10.0 11.43 09 AM 09/19 11.2 10.8 10.3 9.9

- Highest 24 hour change
- observed in river stage
- stage in (ft.) up to Highest stage
- the last latest observed forecast in
- 7 days stage next 7 days
New Munster 13.15 10 PM 09/14 -0.47 11.40 01 PM 09/19

Below is the latest predicted precipitation information in 6 hour
increments for the listed sites. This information is updated twice
daily - in the morning and evening. Precipitation prediction is for
48 hours into the future from October through March and for 24
hours into the future from April through September.

New Munster: 6 am-noon Thu Sep 19 0.00
New Munster: noon-6 pm Thu Sep 19 0.03
New Munster: 6 pm-midn Thu Sep 19 0.01
New Munster: midn-6 am Fri Sep 20 0.00
New Munster: 6 am-noon Fri Sep 20 0.00
New Munster: noon-6 pm Fri Sep 20 0.00
New Munster: 6 pm-midn Fri Sep 20 0.00
New Munster: midn-6 am Sat Sep 21 0.02


LAT...LON 4262 8830 4262 8817 4255 8814 4246 8814
4245 8824 4255 8824


Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.

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