Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
338 AM CST Sun Dec 14 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-150945-
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-
338 AM CST Sun Dec 14 2025 /438 AM EST Sun Dec 14 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 this morning.
  Limited Excessive Cold Risk tonight.
  Limited Snow Risk northeast Porter County this morning.

DISCUSSION...

Very cold conditions with wind chill values as low as 25 below
zero will continue this morning. Sub-zero wind chills will then
persist through tonight.

Lake effect snow showers over northeast Porter County this morning
will result in slippery travel conditions.

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

Monday morning...
  Limited Excessive Cold Risk.
  Limited Blowing Snow Risk south of Kankakee River Valley.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
248 AM CST Sun Dec 14 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-010-
011-019-141800-
/O.CON.KLOT.CW.Y.0007.000000T0000Z-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 Mokena, Oak Forest, Plainfield,
Algonquin, Bolingbrook, Pontiac, Sycamore, Gibson City, McHenry,
Oswego, Calumet City, Rockford, Fairbury, Palatine, Wheaton,
Fowler, Byron, Morocco, Wilmington, Rochelle, Paxton, Mendota,
Waukegan, Manhattan, Gurnee, Channahon, Oak Lawn, Kankakee, Carol
Stream, Aurora, La Grange, Dixon, Oregon, Yorkville, La Salle,
DeMotte, Bradley, DeKalb, Minooka, Cicero, Mundelein, Peotone,
Naperville, Park Forest, Evanston, Bourbonnais, Ottawa, Crete,
Roselawn, Oak Park, Lombard, Gilman, Morris, Belvidere, Crystal
Lake, Chicago, Gary, Elgin, Plano, Lemont, Watseka, Northbrook,
Downers Grove, Hammond, Woodstock, Marseilles, Orland Park,
Oxford, Merrillville, Dwight, Buffalo Grove, Des Plaines,
Beecher, Streator, Joliet, Rensselaer, Coal City, Kentland, and
Schaumburg
248 AM CST Sun Dec 14 2025 /348 AM EST Sun Dec 14 2025/

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST /1 PM EST/
TODAY...

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

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

* WHEN...Until noon CST /1 PM EST/ today.

* 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.

&&

$$

Kluber

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

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