Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
247 PM CDT Sun Jul 26 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-272000-
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-
247 PM CDT Sun Jul 26 2026 /347 PM EDT Sun Jul 26 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 2 of 5 Damaging Wind Risk...up to 70 mph.
     Level 2 of 5 Large Hail Risk...up to 1 inch in diameter.
     Level 1 of 5 Tornado Risk.
  Limited Flooding Risk.

DISCUSSION...

Thunderstorms are possible late this evening, but mainly very late
tonight into early Monday morning. If thunderstorms do occur,
some could be severe, with the primary severe threat being locally
damaging winds to 70 mph. Thunderstorms will also be capable of
producing torrential downpours, which could lead to some localized
flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Limited Thunderstorm Risk...with an associated:
     Level 2 of 5 Severe Thunderstorm Risk.
  Limited Flooding Risk.
  Limited to Elevated Excessive Heat Risk.
Late Monday night through Wednesday morning...
  High Swim Risk Lake Michigan Beaches.
Thursday through Saturday...
  Limited Thunderstorm Risk at times.

DISCUSSION...

Thunderstorms are possible Monday morning, some of which may
produce locally damaging wind gusts and large hail.

An additional round of thunderstorms may occur late Monday
afternoon into the evening. Any storms that do develop would
likely become severe and be capable of producing damaging winds
and large hail.

In areas not affected by storms or cloudiness from storms, peak
heat indices of 100 to 110 degrees are possible Monday afternoon.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed overnight into Monday morning.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the southeast at around 40 mph.

$$

Hazard Report Provided By forecast.weather.gov