Hazard Report Provided By forecast.weather.gov

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
901 PM CDT Fri May 1 2026

ILZ003>006-008-010>013-020-023-033-103-105>108-INZ001-002-010-011-
019-021215-
/O.CON.KLOT.FR.Y.0003.260502T0600Z-260502T1300Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
Kendall-Kankakee-Iroquois-Northern Cook-Southern Cook-Northern
Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-
Benton-
Including the cities of Wheaton, Yorkville, Bourbonnais,
Wilmington, Woodstock, Waukegan, Northbrook, Peotone, Mokena,
Palatine, Crystal Lake, Carol Stream, Bolingbrook, Oxford, Plano,
Kankakee, Beecher, Algonquin, Oak Forest, Gary, Schaumburg,
Lombard, Park Forest, Des Plaines, Portage, Calumet City,
Kentland, Oswego, Gilman, Fowler, Channahon, Oregon, Orland Park,
McHenry, Evanston, Manhattan, Buffalo Grove, Chesterton, Downers
Grove, Naperville, Rensselaer, DeMotte, Belvidere, Joliet,
Hammond, Mundelein, Elgin, Gurnee, Morocco, Rochelle, Dixon,
Merrillville, Plainfield, Roselawn, Sycamore, Watseka, DeKalb,
Aurora, Valparaiso, Bradley, Byron, Lemont, Crete, and Rockford
901 PM CDT Fri May 1 2026 /1001 PM EDT Fri May 1 2026/

...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM CDT /2 AM EDT/ TO 8 AM
CDT /9 AM EDT/ SATURDAY...

* WHAT...Temperatures as low as 32 degrees will result in frost
  formation.

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

* WHEN...From 1 AM CDT /2 AM EDT/ to 8 AM CDT /9 AM EDT/ Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Ratzer

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
244 PM CDT Fri May 1 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-021945-
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-
244 PM CDT Fri May 1 2026 /344 PM EDT Fri May 1 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Frost Risk.

DISCUSSION...

Widespread frost development is likely tonight away from Lake
Michigan, the city of Chicago, and some areas south and southwest
of the Chicago metro where clouds don`t clear out.


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

Saturday Night...
  Limited Frost Risk.
Sunday through Tuesday...
  Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$

Hazard Report Provided By forecast.weather.gov