Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
323 AM CST Mon Dec 1 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-020930-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
323 AM CST Mon Dec 1 2025 /423 AM EST Mon Dec 1 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Elevated Snow Risk.

DISCUSSION...

A period of accumulating snow is expected this afternoon into
tonight which may result in hazardous travel conditions for the
evening commute with impacts potentially lingering into the
Tuesday morning commute.

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

Thursday...
  Limited Excessive Cold Risk.
Friday...
  Limited Excessive Cold Risk.
  Limited Snow Risk.
Saturday and Sunday...
  Limited Snow Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

$$

Special Weather Statement
National Weather Service Chicago/Romeoville IL
250 AM CST Mon Dec 1 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103-106>108-INZ010-
011-019-011400-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Northern Will-Southern Will-Eastern Will-Newton-
Jasper-Benton-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove,
Mundelein, Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb,
Sycamore, Aurora, Elgin, Naperville, Wheaton, Downers Grove,
Lombard, Carol Stream, Ottawa, Streator, La Salle, Mendota,
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, Minooka,
Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, Fairbury,
Watseka, Gilman, Paxton, Gibson City, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Joliet, Bolingbrook,
Plainfield, Mokena, Channahon, Manhattan, Wilmington, Crete,
Peotone, Beecher, Roselawn, Kentland, Morocco, Rensselaer,
DeMotte, Fowler, and Oxford
250 AM CST Mon Dec 1 2025 /350 AM EST Mon Dec 1 2025/

...Patchy Shallow Freezing Fog Early This Morning...

Shallow freezing fog is possible early this morning outside of
Chicago. The freezing fog may be locally dense. If traveling, be
prepared for sudden changes in visibility. Where locally dense fog
develops, patchy slick spots may also occur due to the sub-
freezing temperatures.

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
154 AM CST Mon Dec 1 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-011800-
/O.NEW.KLOT.WW.Y.0009.251201T2000Z-251202T0600Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern
Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Pontiac, Paxton, Bradley, La Grange,
Elgin, Marseilles, Oswego, Dixon, Watseka, Channahon, Dwight,
Peotone, Rockford, Streator, Buffalo Grove, Fairbury, Carol
Stream, Cicero, Joliet, Rochelle, La Salle, Orland Park, Gurnee,
Gilman, Mendota, Algonquin, Gibson City, Calumet City, Downers
Grove, Oregon, Lombard, Park Forest, Chicago, Bourbonnais,
Waukegan, Mundelein, Coal City, Bolingbrook, Palatine, Crete, Des
Plaines, Oak Forest, Wheaton, Schaumburg, Crystal Lake, Ottawa,
Beecher, Byron, Plano, Mokena, Lemont, Manhattan, Aurora,
Kankakee, Morris, Oak Lawn, Plainfield, Yorkville, DeKalb,
Woodstock, Belvidere, Naperville, Northbrook, Sycamore, McHenry,
Wilmington, Oak Park, Evanston, and Minooka
154 AM CST Mon Dec 1 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO
MIDNIGHT CST TONIGHT...

* WHAT...Snow expected. Total snow accumulations between 2 and 4
  inches with locally higher amounts possible south of Interstate 80.

* WHERE...Portions of central, east central, north central, and
  northeast Illinois.

* WHEN...From 2 PM this afternoon to midnight CST tonight.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the Monday evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road
conditions for Illinois can be obtained at
www.gettingaroundillinois.com.

&&

$$

Hazard Report Provided By forecast.weather.gov