Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 262008
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
308 PM CDT Sat Jul 26 2025


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-
308 PM CDT Sat Jul 26 2025 /408 PM EDT Sat Jul 26 2025/

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

.DAY ONE...Tonight.

Weather hazards expected...

Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Tornado Risk.
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Limited Flooding Risk.
Limited Fog Risk.

DISCUSSION...

Scattered thunderstorms are expected through this evening, mainly
south of Interstate 80. The strongest storms will be capable of
producing damaging wind gusts. A tornado or two will also possible.

Torrential rain will also accompany these thunderstorms, leading
to possible localized flash flooding, mainly for areas south of
Interstate 80.

Areas of fog are expected across northern and northwest Illinois
late tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk late Sunday Night.
Limited Excessive Heat Risk.
Limited Fog Risk early in the morning.
Monday...
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk.
Tuesday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk.
Wednesday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
High Swim Risk Lake Michigan Beaches.
Thursday...
High Swim Risk Lake Michigan Beaches.

DISCUSSION...

Dangerous heat and humidity is possible Monday.

There is a chance of thunderstorms Monday morning. Some of these
storms could be strong to ...

https://wxn.io/qkcrw