Hazardous Weather Outlook for McHenry Co., IL

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

FLUS43 KLOT 300144
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
844 PM CDT Tue Jul 29 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-
844 PM CDT Tue Jul 29 2025 /944 PM EDT Tue Jul 29 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 toward sunrise.

DISCUSSION...

Thunderstorms with gusty winds may approach northwest
Illinois late tonight, though likely to remain
west of the area until the daytime hours Wednesday.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday...
Elevated Flooding Risk.
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
High Swim Risk Lake Michigan Beaches.
Thursday...
Limited Thunderstorm Risk.
High Swim Risk Lake Michigan Beaches.
Friday...
High Swim Risk Lake Michigan Beaches.
Monday...
Limited Thunderstorm Risk.

DISCUSSION...

Periods of thunderstorms are likely Wednesday through Thursday
morning. Some of these storms Wednesday could be strong to severe
and also produce torrential rain which may lead to localized
flash flooding. Periods of heavy rain are possible Wednesday
night.

High waves and dangerous swimming conditions are expected
Wednesday afternoon through Friday afternoon at Lake Michigan
beaches.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east-southeast at 30 to 40 mph.


https://wxn.io/1upfb