Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1045 PM CDT Mon Jul 20 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-220345-
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-
1045 PM CDT Mon Jul 20 2026 /1145 PM EDT Mon Jul 20 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Damaging Wind Risk...up to 60 mph.
     Level 1 of 5 Large Hail Risk...up to 1 inch in diameter.
  Limited Flooding Risk.

DISCUSSION...

Isolated thunderstorms are possible overnight. Any storm that
develops could produce damaging winds, large hail and torrential
rainfall.

.DAYS TWO THROUGH SEVEN...Monday through Sunday.

Tuesday afternoon through early Thursday...
  High Swim Risk Lake Michigan Beaches.

DISCUSSION...

Hazardous swim conditions are expected to develop Tuesday night
and continue through Wednesday night.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the southeast at 40 mph.

$$

Hazard Report Provided By forecast.weather.gov