Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
139 PM CDT Mon Aug 10 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-111845-
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-
139 PM CDT Mon Aug 10 2026 /239 PM EDT Mon Aug 10 2026/

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

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Elevated Thunderstorm Risk...with an associated:
     Level 1 of 5 Tornado Risk.
     Level 2 of 5 Damaging Wind Risk...up to 65 mph.
     Level 1 of 5 Large Hail Risk...up to quarter size.
  Elevated Flooding Risk.

DISCUSSION...

Scattered thunderstorms are expected this afternoon into this
evening. Some of these storms could be strong to severe, with
damaging winds being the greatest severe weather threat. Any
thunderstorms will also be capable of producing torrential
downpours and localized flooding, especially if they track
across areas which saw heavy rains Sunday and Sunday night.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...
  Elevated Flooding Risk.
  Significant Thunderstorm Risk...with an associated:
     Level 3 of 5 Severe Thunderstorm Risk.
Wednesday...
  Elevated Flooding Risk.
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
Thursday...
  Elevated Flooding Risk.
  Limited Thunderstorm Risk.
Friday...
  Limited Flooding Risk.
  Limited Thunderstorm Risk.
Saturday and Sunday...
  Limited Thunderstorm Risk.

DISCUSSION...

A complex of thunderstorms may move across the area from mid
to late Tuesday morning into early Tuesday afternoon. If these
thunderstorms materialize, they will likely be severe with
wind gusts as high as 80 mph.

Additional rounds of thunderstorms will be possible through
the end of the week with a continued threat for flash flooding
and severe weather at times.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed this afternoon into this evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east southeast at 25 to 30 mph.

$$

Hazard Report Provided By forecast.weather.gov