Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
501 AM CDT Fri Aug 7 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-081015-
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-
501 AM CDT Fri Aug 7 2026 /601 AM EDT Fri Aug 7 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.
  Limited Fog Risk.

DISCUSSION...

Dense fog is occurring in locations near and east of Interstate 55
this morning.

Isolated thunderstorms will be possible south of the Kankakee River
this morning. Additional storms are possible areawide tonight. If
storms occur in northern Illinois this evening, then they may
produce strong winds, small hail, and torrential downpours.

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

Saturday Night...
  Limited Flooding Risk.
  Limited Thunderstorm Risk.
Sunday...
  Elevated Flooding Risk.
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
Monday...
  Elevated Flooding Risk.
  Elevated Thunderstorm Risk...with an associated:
     Level 2 of 5 Severe Thunderstorm Risk.
Tuesday...
  Elevated Flooding Risk.
  Limited Thunderstorm Risk.
Wednesday and Thursday...
  Limited Thunderstorm Risk.

DISCUSSION...

Multiple waves of thunderstorms are possible Saturday night
through early next week. Some storms may be severe and produce
locally heavy rainfall.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east-southeast at 40 mph.

$$

Hazard Report Provided By forecast.weather.gov