Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
950 AM CST Sat Dec 13 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-141600-
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-
950 AM CST Sat Dec 13 2025 /1050 AM EST Sat Dec 13 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 Excessive Cold Risk.
  Elevated Snow Risk.

DISCUSSION...

Very cold conditions are expected through tonight, with wind
chill values as low as 25 below zero.

Accumulating snow today will lead to hazardous travel for areas
primarily around and south of Interstate 80, including the far
southern Chicago metro. Several inches of accumulations are
expected for areas south of the Kankakee River Valley.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday and early Monday morning...
  Elevated Excessive Cold Risk.

DISCUSSION...

Bitterly cold conditions will continue through Monday morning.
The lowest wind chill values as low as 25 below zero are expected
Sunday morning. Wind chill values will then remain below zero
Sunday afternoon through Monday morning.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$

Hydrologic Outlook
ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111-141-
197-201-INC007-073-089-111-127-141615-

Hydrologic Outlook
National Weather Service Chicago IL
946 AM CST Sat Dec 13 2025

...River Ice to Expand This Weekend due to Very Cold Temperatures...

Recent reports from river ice spotters and river gauges indicate
that some melting of ice has occurred over the last few days, but
isolated areas of heavy river ice coverage continue. Very cold
temperatures this weekend will cause river ice to expand in
coverage. Ice jams will be possible in isolated areas along the
Rock, Fox, Des Plaines, and Kankakee rivers into early next week.
Ice jams may cause rises on area rivers with little warning.

Warmer temperatures may return to the area by late next week, which
could begin a slow melt of river ice.

This outlook means that elevated water levels and potential impacts
are possible, but not yet certain. Persons with interests along area
rivers should closely monitor the latest forecasts.

This outlook may be updated by tomorrow afternoon.
$$

WSL/Borchardt/DK

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
941 AM CST Sat Dec 13 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-010-
011-019-140145-
/O.CON.KLOT.CW.Y.0007.251214T0200Z-251214T1800Z/
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-Newton-Jasper-Benton-
Including the cities of Orland Park, Morris, Hammond, Dixon, Park
Forest, Northbrook, Joliet, Crete, Buffalo Grove, Streator,
Woodstock, Gurnee, Oak Lawn, Elgin, Rensselaer, Oswego, Roselawn,
Oak Park, Des Plaines, Rochelle, Plano, Sycamore, Peotone,
Watseka, Naperville, Pontiac, Mendota, Belvidere, Calumet City,
Minooka, Byron, Gibson City, Mundelein, Ottawa, Bradley, Gary,
Kentland, Palatine, Bolingbrook, Carol Stream, Beecher, DeKalb,
Oregon, Aurora, Channahon, Algonquin, Gilman, Oxford, Lombard,
Dwight, Plainfield, McHenry, Schaumburg, Fowler, Kankakee, Coal
City, Paxton, Manhattan, Waukegan, Yorkville, Crystal Lake,
Wheaton, Mokena, Bourbonnais, Wilmington, Marseilles,
Merrillville, Evanston, Cicero, Oak Forest, Morocco, Rockford,
Fairbury, Chicago, DeMotte, La Salle, Downers Grove, Lemont, and
La Grange
941 AM CST Sat Dec 13 2025 /1041 AM EST Sat Dec 13 2025/

...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM CST /9 PM EST/
THIS EVENING TO NOON CST /1 PM EST/ SUNDAY...

* WHAT...Very cold wind chills of 20 to 25 below zero expected.

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

* WHEN...From 8 PM CST /9 PM EST/ this evening to noon CST /1 PM
  EST/ Sunday.

* IMPACTS...The dangerously cold wind chills as low as 25 below zero
  could cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.

&&

$$

DK

Hazard Report Provided By forecast.weather.gov