Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
230 AM CDT Tue Apr 21 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-220730-
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-
230 AM CDT Tue Apr 21 2026 /330 AM EDT Tue Apr 21 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...

  Limited Thunderstorm Risk.
  Elevated Fire Weather Risk south of I-80.

DISCUSSION...

Isolated to scattered thunderstorms are possible this afternoon.
While the severe threat appears low at this time, a few stronger
storms could produce wind gusts near 50 mph and small hail.

South of I-80: the combination of gusty southwesterly winds,
afternoon relative humidity values around 30 percent and low fine
fuel moisture will result in an elevated fire danger ahead of any
thunderstorms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday...
  Limited Thunderstorm Risk well south of I-80.
Thursday night and Friday...
  Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the southeast at 35 mph.

$$

Hazard Report Provided By forecast.weather.gov