C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 240102 AAA
HWOLOT
Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
802 PM CDT Wed Jul 23 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-
802 PM CDT Wed Jul 23 2025 /902 PM EDT Wed Jul 23 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Elevated Excessive Heat Risk.
DISCUSSION...
Heat indices will remain above 75 degrees through the night for
much of the area, with heat indices only falling to around 85
degrees very late tonight in Chicago.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Thursday...
Significant Excessive Heat Risk.
Elevated Flooding Risk.
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Friday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Saturday...
Limited Thunderstorm Risk.
Limited Flooding Risk.
Sunday through Tuesday...
Limited Excessive Heat Risk.
DISCUSSION...
Peak afternoon heat index values of 100 to 110 degrees are
expected again Thursday afternoon.
Thunderstorms may arrive as early as Thursday morning across
northwest Illinois, with increasing chances during the afternoon
and evening across the area. Any thunderstorms that occur will be
capable of gusty to locally damaging wind gusts as well as
torrential rainfall leading to localized flash flooding.
Periodic thunderstorms Friday through Saturday will bring the
chance for torrential rainfall and localized flooding.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/bq4rj
