C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 210849
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
349 AM CDT Mon Jul 21 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-
349 AM CDT Mon Jul 21 2025 /449 AM EDT Mon Jul 21 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...
High Swim Risk Lake Michigan Beaches Illinois shore this morning.
DISCUSSION...
Dangerous swimming conditions continue for the Illinois beaches of
Lake Michigan this morning.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Wednesday and Thursday...
Significant Excessive Heat Risk.
Thursday night...
Limited Thunderstorm Risk.
Friday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk.
Saturday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk.
DISCUSSION...
Dangerous heat and humidity with heat index values up to around
110F are expected Wednesday and Thursday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/aufjf
