Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
310 PM CST Fri Jan 23 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-242115-
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-
310 PM CST Fri Jan 23 2026 /410 PM EST Fri Jan 23 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Excessive Cold Risk.
  Limited Snow Risk far NE Porter County.

DISCUSSION...

Dangerously cold weather will persist through Saturday morning,
with wind chills ranging from 20 to 30 below. The coldest
conditions will occur north and west of I-55.

Lake effect snow showers will persist across parts of far
northeast Porter County tonight, which will produce slippery
conditions and reduced visibilities.

Extensive ice cover on area rivers may cause localized ice jam
flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Elevated Excessive Cold Risk in the morning.
  Elevated Snow Risk afternoon and night.
Sunday...
  Limited Excessive Cold Risk.
  Elevated Snow Risk.
Sunday night and Monday...
  Elevated Excessive Cold Risk.
Tuesday...
  Limited Excessive Cold Risk.
Wednesday...
  Limited Excessive Cold Risk.
  Limited Snow Risk.
Thursday...
  Limited Excessive Cold Risk.

DISCUSSION...

Bitterly cold conditions will continue through Saturday.

Accumulating snow is likely late Saturday into Sunday, especially
southeast of a Peru to Waukegan Illinois line. Several inches of
fluffy snow will likely lead to hazardous travel conditions.

Extensive ice cover on area rivers may cause localized ice jam
flooding.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
252 PM CST Fri Jan 23 2026

ILZ003>006-008-010>013-019>021-023-032-103-105>108-240700-
/O.CON.KLOT.CW.Y.0002.000000T0000Z-260124T1500Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Livingston-Northern Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Minooka, Wilmington,
Dwight, Plainfield, Dixon, Plano, Morris, Aurora, Manhattan,
Lombard, Buffalo Grove, Oregon, Channahon, Belvidere, Schaumburg,
Woodstock, Orland Park, Crete, Bourbonnais, Lemont, Wheaton,
Ottawa, Bradley, McHenry, Peotone, Rochelle, Naperville, Oswego,
Joliet, Kankakee, Fairbury, Evanston, Northbrook, Beecher,
Waukegan, Oak Forest, Park Forest, Byron, La Salle, Marseilles,
Mundelein, Coal City, Yorkville, Palatine, Pontiac, Bolingbrook,
DeKalb, Des Plaines, Gurnee, Elgin, Downers Grove, Mendota,
Mokena, Algonquin, Streator, Rockford, Calumet City, Sycamore,
and Carol Stream
252 PM CST Fri Jan 23 2026

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY...

* WHAT...Very cold wind chills as low as 25 to 30 below.

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

* WHEN...Until 9 AM CST Saturday.

* IMPACTS...The dangerously cold wind chills as low as 25 to 30
  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.

Residents of the city of Chicago can call 3 1 1 to request well
being checks for elderly friends or family members, or for
information on finding the nearest warming center.

&&

$$

Hydrologic Outlook
ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111-141-
197-201-INC007-073-089-111-127-241800-

Hydrologic Outlook
National Weather Service Chicago IL
220 PM CST Fri Jan 23 2026

...Risk for River Ice Formation and Isolated Ice Jams Will Continue
Into Next Week...

Cold temperatures this week have caused a significant increase in
river ice across the area, including multiple ice jams. Cold
temperatures are expected to continue into next week, with favorable
conditions for river ice formation. Areas of open river may see new
ice growth, while areas with existing ice cover my thicken.

No widespread flooding is expected, but ice jams will be possible in
isolated areas, especially along the Rock, Fox, and Kankakee rivers.
Ice jams may cause rises or fluctuations on area rivers with little
warning.

Persons with interests along area rivers should closely monitor the
latest forecasts.

$$

WSL

Hazard Report Provided By forecast.weather.gov