Hazardous Weather Outlook for McHenry Co., IL

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

FLUS43 KLOT 301455
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
955 AM CDT Wed Jul 30 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-
955 AM CDT Wed Jul 30 2025 /1055 AM EDT Wed Jul 30 2025/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

Elevated Thunderstorm Risk along and southeast of Interstate 55:
Level 1 of 5 Damaging Wind Risk...Up to 60 mph.
Elevated Flooding Risk.
High Swim Risk Lake Michigan Beaches.

DISCUSSION...

Showers and storms will move across the area today. A few storms
may be severe mainly southeast of Interstate 55 primarily between
11 AM and 3 PM. Additional showers and storms are possible after
sunset with a threat for localized flooding.

Strengthening northeast winds and building waves on Lake Michigan
will produce hazardous swim conditions from this afternoon through
tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

DISCUSSION...

Thursday...
Elevated Flooding Risk.
Elevated Thunderstorm Risk.
High Swim Risk Lake Michigan Beaches.
Friday...
High Swim Risk Lake Michigan Beaches.
Tuesday...
Limited Thunderstorm Risk.

Showers and scattered thunderstorms will linger Thursday. Some of
these storms may produce locally heavy rainfall through early
afternoon.

Hazardous swimming conditions will persist at Lake Michigan
beaches into Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today, but any reports of severe
weather would be appreciated.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at 30 to 40 mph.


https://wxn.io/jpqq6