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Dense Fog Advisory

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
839 AM CST Sun Jan 21 2018

ILZ011>014-212245-
/O.EXB.KLOT.FG.Y.0004.000000T0000Z-180122T0300Z/
DeKalb-Kane-DuPage-Cook-
Including the cities of DeKalb, Aurora, Elgin, Wheaton,
and Chicago
839 AM CST Sun Jan 21 2018

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING...

The National Weather Service in Chicago has issued a Dense Fog
Advisory, which is in effect until 9 PM CST this evening.

* VISIBILITY...Areas of dense fog will reduce visibilities to
  one quarter mile or less.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Dense Fog Advisory means visibilities will frequently be
reduced to less than one quarter mile. If driving...slow down...
use your headlights...and leave plenty of distance ahead of you.

&&

$$



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
416 AM CST Sun Jan 21 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
221030-
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-
416 AM CST Sun Jan 21 2018 /516 AM EST Sun Jan 21 2018/

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

.DAY ONE...Today and Tonight.

WEATHER HAZARDS EXPECTED:
  Significant Fog Risk.
  Limited Thunderstorm Risk Tonight.
  Limited Flooding Risk Tonight.

DISCUSSION:

Areas of dense fog are likely south of I-80 this morning, and
could develop area wide this afternoon and evening.

Showers and scattered thunderstorms are likely tonight, especially
after midnight. In addition to cloud to ground lightning, some of
the thunderstorms will produce very heavy downpours. Locally heavy
rainfall totals could result in localized minor flooding,
especially in low lying and flood prone areas.

In addition, localized ice jam flooding will remain a threat on
area rivers.

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

Monday...
  Limited Flooding Risk.
  Limited Thunderstorm Risk.
  Elevated Snow Risk Monday Night.
Tuesday...
  Limited Snow Risk in the morning.

DISCUSSION:

Scattered thunderstorms, some with heavy rain, will likely linger
into the morning hours Monday. The threat of locally heavy rain
will continue early Monday morning, with localized mainly minor
flooding remaining a threat. Additional isolated thunderstorms
are possible Monday afternoon and early evening.

Rain is expected to change to snow overnight Monday night. Snow
could accumulate Monday night, especially near the Wisconsin
border.

Finally, localized ice jam flooding will remain a threat on area
rivers.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

&&

$$



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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