Hazardous Weather Outlook for McHenry Co., IL

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

FLUS43 KLOT 270206 AAA
HWOLOT

Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
906 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-
906 PM CDT Sat Jul 26 2025 /1006 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 Flooding Risk.
Limited Thunderstorm Risk.
Limited Fog Risk.

DISCUSSION...

Scattered showers and thunderstorms may continue overnight,
mainly near and south of Interstate 80. The strongest storms will
be capable of producing gusty wind gusts and torrential rainfall
which may lead to localized flash flooding.

Areas of fog are expected across interior northern 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...
Elevated Excessive Heat Risk.
Limited Thunderstorm Risk.
Tuesday...
Elevated Excessive Heat Risk.
Limited Flooding Risk.
Limited Thunderstorm Risk.
Wednesday...
High Swim Risk Lake Michigan Beaches.
Limited Flooding Risk.
Limited Thunderstorm Risk.
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 severe especially across northwest
Illinois.

Periods of thunderstorms are possible Tuesday through Wednesday.
Some of these thunderstorms could be strong to severe and may
also produce torrential rain ...

https://wxn.io/fp8lv