Hazardous Weather Outlook for McHenry Co., IL

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

FLUS43 KLOT 282000
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
300 PM CDT Mon Jul 28 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-
300 PM CDT Mon Jul 28 2025 /400 PM EDT Mon Jul 28 2025/

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.
Limited Flooding Risk.
Elevated Excessive Heat Risk through early this evening.

DISCUSSION...

Isolated thunderstorms with gusty winds will be possible
through early evening.

Hot and humid weather conditions are expected with afternoon
peak heat indices around 105 degrees.

Another strong thunderstorm complex is expected to approach the
area late tonight. While this thunderstorm complex may be in a
decaying mode as it arrives, there is some potential for damaging
wind gusts across northwest Illinois toward sunrise.

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

Tuesday...
Limited Flooding Risk.
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Excessive Heat Risk.
Wednesday...
Elevated Flooding Risk.
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
High Swim Risk Lake Michigan Beaches.
Thursday...
Limited Thunderstorm Risk In The Morning.
High Swim Risk Lake Michigan Beaches.

DISCUSSION...

Periods of thunderstorms are possible Tuesday through Wednesday,
some of which could be strong to severe and also produce
torrential rain which may lead to localized flash flooding.

High waves and dangerous swimming ...

https://wxn.io/c6j6p