Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
208 AM CDT Wed Aug 19 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-200715-
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-
208 AM CDT Wed Aug 19 2026 /308 AM EDT Wed Aug 19 2026/

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

.DAY ONE...Early this Morning through Tonight.

Weather hazards expected...

  Limited Fog Risk early this morning.
  Limited Thunderstorm Risk.
  Elevated Flooding Risk.

DISCUSSION...

Areas of shallow fog may become locally dense early this morning
across portions of interior northern Illinois.

A corridor of training thunderstorms may set up near and south of
a Pontiac to Fowler line this afternoon into the evening.
Primary hazards include gusty winds and torrential rainfall
which may lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Friday and Saturday...
  Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east southeast around 20 mph.

$$

Hazard Report Provided By forecast.weather.gov