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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
400 AM CST Mon Feb 19 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
201000-
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-
400 AM CST Mon Feb 19 2018 /500 AM EST Mon Feb 19 2018/

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

.DAY ONE...Today and Tonight.

WEATHER HAZARDS EXPECTED:
  Limited Thunderstorm Risk.
  Elevated Flooding Risk.
  Elevated Fog Risk.

DISCUSSION:

Unseasonably warm, moist air will spread across the area today as
a warm front lifts north across the area. Moist air over cold
ground and lingering snow pack may result in areas of dense fog
over portions of the area today. Warm, moist air will remain in
place across the area through Tuesday. A series of mid level
disturbances will bring periods of showers and a few thunderstorms
today into Tuesday night. Heavy rainfall in excess of an inch,
and as much as 2 to 4 inches in some areas, will combine with
frozen ground and melting snowpack to result in runoff which may
lead to flooding. Area rivers and creeks will likely see high
water levels over the next several days, with some rivers likely
to go into flood.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...
  Elevated Flooding Risk.
  Limited Thunderstorm Risk.
  Elevated Fog Risk.
  Limited Ice Accumulation Risk.
  Limited Sleet and Freezing Rain Risk Tuesday night.

Wednesday... Limited Ice Accumulation Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

moving northeast at 55 MPH...

&&

$$



Special Weather Statement

SPECIAL WEATHER STATEMENT
National Weather Service Chicago/Romeoville IL
1236 PM CST Mon Feb 19 2018

ILZ003>006-008-010>014-019>022-INZ001-002-192130-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Lake IN-Porter-
Including the cities of Rockford, Belvidere, Woodstock, Waukegan,
Oregon, Dixon, DeKalb, Aurora, Elgin, Wheaton, Chicago, Ottawa,
Oswego, Morris, Joliet, Gary, and Valparaiso
1236 PM CST Mon Feb 19 2018

...Period of Dense Fog Early to Mid Afternoon...

As moist air moves over existing snow cover, dense fog has
developed early this afternoon along and north of the Interstate
80 corridor. Visibility as low as a few hundred feet have been
observed. The fog appears to not last long...only about two to
three hours...before improvement occurs from south to north
occurs.

Allow extra travel time this afternoon and keep extra following
distance from the vehicle ahead of you.

$$

MTF




Flood Watch

Flood Watch
National Weather Service Chicago/Romeoville IL
1040 AM CST Mon Feb 19 2018

...The Flood Watch continues for the Rock River at Byron affecting
gle County...

...The National Weather Service in Chicago has issued a Flood Watch
for the following rivers in Illinois and Indiana...

  Des Plaines River near Russell affecting Lake County
  Des Plaines River near Gurnee affecting Lake County
  Iroquois River at Rensselaer affecting Jasper County
  Iroquois River near Chebanse affecting Iroquois and Kankakee
  Counties
  Kankakee River near Wilmington affecting Grundy and Will Counties
  W Br Du Page River near Warrenville affecting Du Page County


.Heavy rainfall of 1.5 to 4 inches is likely through Tuesday night with
locally heavier amounts in excess of 4 inches possible. The combination
of this heavy rainfall, frozen ground, and some snow melt will likely
result in flooding.

ILZ021>022-200440-
/O.NEW.KLOT.FL.A.0011.180221T0843Z-180226T0400Z/
/WLMI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
1040 AM CST Mon Feb 19 2018

The National Weather Service in Chicago has issued a
* Flood Watch for
  The Kankakee River near Wilmington
* from late Tuesday night to Sunday evening.
* At  9:45 AM Monday the stage was 2.5 feet.
* Moderate flooding is possible.
* Flood stage is 6.5 feet.
* Forecast...Flood stage may be reached by early Wednesday morning.
* Impact...At 7.5 feet...South Island park in Wilmington partially
  flooded.

&&

LAT...LON 4116 8806 4135 8828 4143 8827 4126 8799


$$



Flood Warning

Flood Warning
National Weather Service Chicago/Romeoville IL
1037 AM CST Mon Feb 19 2018

...The National Weather Service in Chicago has issued a Flood Warning
for the following rivers in Illinois and Indiana...

  East Branch Du Page River at Bolingbrook affecting Will County
  Iroquois River near Foresman affecting Newton County
  Iroquois River at Iroquois affecting Iroquois County
  Kankakee River at Dunns Bridge affecting Porter County
  Kankakee River near Kouts affecting Jasper and Porter Counties
  Kankakee River at Momence affecting Kankakee County
  Sugar Creek at Milford affecting Iroquois County

...Forecast flooding Changed from Moderate to Major severity for the
following rivers in Indiana...
  Kankakee River at Shelby affecting Lake and Newton Counties

.Heavy rainfall of 1.5 to 4 inches is likely through Tuesday night with
locally heavier amounts in excess of 4 inches possible. The combination
of this heavy rainfall, frozen ground, and some snow melt will likely
result in flooding.

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.

&&

ILC197-200436-
/O.NEW.KLOT.FL.W.0010.180220T1845Z-180223T0936Z/
/BOLI2.2.ER.180220T1845Z.180221T1800Z.180223T0336Z.UU/
1037 AM CST Mon Feb 19 2018

The National Weather Service in Chicago has issued a

* Flood Warning for
  The East Branch Du Page River at Bolingbrook.
* from Tuesday afternoon to late Thursday night.
* At  940 AM Monday the stage was 15.5 feet.
* Flood stage is 19.5 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by Tuesday afternoon and continue
  to rise to near 21.4 feet by Wednesday afternoon.The river will
  fall below flood stage by Thursday evening.


&&

LAT...LON 4178 8810 4177 8805 4170 8806 4169 8814
      4170 8819 4172 8810

$$



Flood Watch

Flood Watch
National Weather Service Chicago/Romeoville IL
944 AM CST Mon Feb 19 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
192345-
/O.CON.KLOT.FA.A.0001.180220T0000Z-180221T1200Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
Including the cities of Rockford, Belvidere, Woodstock, Waukegan,
Oregon, Dixon, DeKalb, Aurora, Elgin, Wheaton, Chicago, Ottawa,
Oswego, Morris, Joliet, Kankakee, Pontiac, Watseka, Paxton, Gary,
Valparaiso, Morocco, Rensselaer, and Fowler
944 AM CST Mon Feb 19 2018 /1044 AM EST Mon Feb 19 2018/

...FLOOD WATCH REMAINS IN EFFECT FROM 6 PM CST /7 PM EST/ THIS
EVENING THROUGH LATE TUESDAY NIGHT...

The Flood Watch continues for

* Much of northern Illinois and northwest Indiana.

* From 6 PM CST this evening through late Tuesday night.

* Unseasonably warm and moist air will overspread the region
  beginning today, with several rounds of showers and
  thunderstorms expected between today and Wednesday. Widespread
  rainfall totals between one and a half and four inches are
  likely, with locally heavier totals in excess of four inches
  possible.

* Ground remains frozen, therefore much of the rain will result
  in rapid runoff. In addition, many areas north of I-80 still
  have snow on the ground and melting of this snow will compound
  runoff from heavy rainfall. Ice jam break up is also a
  concern. Expect rises on area rivers and streams that may
  result in flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$

- Izzi




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