Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
325 AM CDT Sun Apr 19 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-200830-
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-
325 AM CDT Sun Apr 19 2026 /425 AM EDT Sun Apr 19 2026/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Significant Frost and Freeze Risk.

DISCUSSION...

Sub-freezing temperatures are forecast late tonight into early
Monday morning outside of central Cook County. Take necessary
precautions to protect sensitive plants and vegetation.

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

  No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
844 AM CDT Sun Apr 19 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-INZ001-002-
010-011-019-200000-
/O.EXP.KLOT.FR.Y.0001.000000T0000Z-260419T1400Z/
/O.CON.KLOT.FZ.W.0001.260420T0500Z-260420T1400Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern
Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-
Benton-
Including the cities of McHenry, Dwight, Valparaiso, Naperville,
Channahon, DeMotte, Aurora, Rochelle, Lombard, Crystal Lake, La
Salle, Kankakee, Dixon, Bradley, Watseka, Oxford, Bourbonnais,
Merrillville, Mendota, Hammond, Manhattan, Wilmington, Beecher,
Minooka, Sycamore, Portage, Pontiac, Kentland, Marseilles,
DeKalb, Wheaton, Coal City, Downers Grove, Waukegan, Fairbury,
Gibson City, Belvidere, Ottawa, Joliet, Gurnee, Byron,
Bolingbrook, Plainfield, Woodstock, Gilman, Rockford, Algonquin,
Plano, Yorkville, Peotone, Carol Stream, Crete, Rensselaer,
Morocco, Chesterton, Mokena, Buffalo Grove, Mundelein, Roselawn,
Oregon, Streator, Paxton, Fowler, Oswego, Gary, Morris, and Elgin
844 AM CDT Sun Apr 19 2026 /944 AM EDT Sun Apr 19 2026/

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT CDT /1 AM EDT/
TONIGHT TO 9 AM CDT /10 AM EDT/ MONDAY...
...FROST ADVISORY WILL EXPIRE AT 9 AM CDT /10 AM EDT/ THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 27 expected, with the
  coldest conditions across interior northern Illinois.

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

* WHEN...From midnight CDT /1 AM EDT/ tonight to 9 AM CDT /10 AM
  EDT/ Monday.

* IMPACTS...Frost and freeze conditions could kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Hazard Report Provided By forecast.weather.gov