Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
800 PM CST Sat Dec 13 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-150200-
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-
800 PM CST Sat Dec 13 2025 /900 PM EST Sat Dec 13 2025/

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.

DISCUSSION...

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

Gusty winds could result in some snow drifting back over
previously cleared roads south of I-80 tonight.

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

Sunday morning...
  Elevated Excessive Cold Risk.
Sunday afternoon through Monday morning...
  Limited Excessive Cold Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
804 PM CST Sat Dec 13 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-010-
011-019-141215-
/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 Merrillville, Morocco, Fowler, Rochelle,
Rockford, Wheaton, Evanston, Paxton, Coal City, Plainfield,
Minooka, Palatine, Gary, Mendota, Woodstock, Oswego, Cicero,
Naperville, Oak Park, Oxford, Marseilles, Ottawa, Peotone, Crete,
Carol Stream, Pontiac, Chicago, Waukegan, Watseka, Kentland,
Sycamore, Schaumburg, Roselawn, Calumet City, Orland Park,
Mokena, Morris, Bradley, Northbrook, DeMotte, Dwight, Park
Forest, Elgin, Oak Forest, Bolingbrook, Channahon, Algonquin,
Joliet, Rensselaer, Lombard, DeKalb, McHenry, Mundelein, Hammond,
Crystal Lake, Lemont, Downers Grove, Wilmington, Buffalo Grove,
La Salle, Oak Lawn, Kankakee, Yorkville, Fairbury, Byron,
Manhattan, Beecher, Oregon, Streator, Plano, Bourbonnais, Gibson
City, Gurnee, Gilman, Des Plaines, Dixon, Aurora, Belvidere, and
La Grange
804 PM CST Sat Dec 13 2025 /904 PM EST Sat Dec 13 2025/

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

* WHAT...Very cold wind chills of 15 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/ 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.

&&

$$

Borchardt

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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