FLUS43 KLOT 261957

HWOLOT



Hazardous Weather Outlook

National Weather Service Chicago/Romeoville IL

257 PM CDT Thu Jun 26 2025



ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-

010-011-019-272000-

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-

257 PM CDT Thu Jun 26 2025 /357 PM EDT Thu Jun 26 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...with an associated:

     Level 1 of 5 Damaging Wind Risk...up to 60 mph.

  Limited Flooding Risk.

  Elevated Excessive Heat Risk.



DISCUSSION...



The threat of widely scattered thunderstorms will continue 

through the evening hours. Conditions are not favorable for 

organized or widespread severe weather, however there is a very 

low risk that an isolated storm could produce very isolated 

marginally damaging wind gusts. In addition, thunderstorms will be

capable of producing torrential downpours.



Heat indices will remain around 100 degrees until sunset. 



.DAYS TWO THROUGH SEVEN...Friday through Wednesday.



Friday...

  Limited Flooding Risk.

  Limited Thunderstorm Risk.

Sunday...

  Elevated Excessive Heat Risk.

  Limited Flooding Risk.

  Limited Thunderstorm Risk.

Monday...

  Elevated Thunderstorm Risk.

  Limited Flooding Risk. 



.SPOTTER INFORMATION STATEMENT...



  Spotter activation is not expected tonight.



GENERAL STORM MOTION OF THE DAY:



  Moving toward the northeast at around 20 mph. 



$$



LMZ740>745-272000-

Winthrop Harbor to Wilmette Harbor IL-

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-

Burns Harbor to Michigan City IN-

257 PM CDT Thu Jun 26 2025



This Hazardous Weather Outlook is for portions of the Illinois

nearshore waters of Lake Michigan and the Indiana nearshore

waters of Lake Michigan.



.DAY ONE...Tonight.



Weather hazards expected...



  Limited Thunderstorm Risk...with an associated:

     Level 1 of 5 Thunderstorm Wind Gust Risk...up to 50 kt.



.DAYS TWO THROUGH SEVEN...Friday through Wednesday.



Friday...

  Limited Thunderstorm Risk.

Sunday and Monday...

  Limited Thunderstorm Risk.



$$



- Izzi



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