Hazardous Weather Outlook for McHenry Co., IL

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

FLUS43 KLOT 261623
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1123 AM CDT Mon Aug 26 2024


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-
1123 AM CDT Mon Aug 26 2024 /1223 PM EDT Mon Aug 26 2024/

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

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Significant Excessive Heat Risk.

DISCUSSION...

Hot and humid conditions will continue to build across the area
today. Areas from Chicago west and southwest will see peak
afternoon heat indices around 105 degrees.

Thunderstorms are expected to move east across Wisconsin late
tonight. There is a slight (less than 20 percent) chance that some
of these storms could clip far northern or northeast Illinois,
mainly north of Interstate 90. If storms do affect the area late
tonight, they may be capable of producing localized damaging wind
gusts to 60 mph.


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

Tuesday...
Limited Flooding Risk.
Limited Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk.
Significant to Extreme Excessive Heat Risk.
Wednesday...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Excessive Heat Risk.
Thursday...
Limited Thunderstorm Risk.
Friday...
Limited Thunderstorm Risk.

DISCUSSION...

Dangerously hot and humid weather conditions will persist
Tuesday, likely with the hottest temperatures of the year in many
locations. Peak afternoon heat indices of 105 to 115 degrees are
forecast.

There is a slight chance of isolated to scattered thunderstorms
early Tuesday morning, mainly north of I-90. There is a greater
chance (around 40 percent) of scattered thunderstorms late Tuesday
afternoon and Tuesday night. Some of these storms could be
severe, with damaging winds the primary threat, and isolated large
hail also possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east-southeast at 25 mph.


https://wxn.io/vz9rr