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2 products issued by NWS for: Amf Ohare IL
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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...

&&

$$



Flood Watch

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

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
192200-
/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
346 AM CST Mon Feb 19 2018 /446 AM EST Mon Feb 19 2018/

...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH LATE
TUESDAY NIGHT...

The Flood Watch continues for

* Portions of Illinois and Indiana, including the following
  areas, in Illinois, Boone, Cook, DeKalb, DuPage, Ford, Grundy,
  Iroquois, Kane, Kankakee, Kendall, La Salle, Lake IL, Lee,
  Livingston, McHenry, Ogle, Will, and Winnebago. In Indiana,
  Benton, Jasper, Lake IN, Newton, and Porter.

* From 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. Expect area
  wide rainfall totals of over an inch with many areas
  potentially receiving 2 to 4 inches.

* 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.

&&

$$



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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