FLUS43 KLOT 190945

HWOLOT



Hazardous Weather Outlook

National Weather Service Chicago/Romeoville IL

445 AM CDT Tue Aug 19 2025



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

010-011-019-200945-

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-

445 AM CDT Tue Aug 19 2025 /545 AM EDT Tue Aug 19 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...

 

  Limited Thunderstorm Risk southeast of Interstate 57 this

    morning. 

  Limited Flooding Risk.  

  High Swim Risk at Lake Michigan Beaches. 



DISCUSSION...



A few storms will continue festering through the morning hours,

primarily southeast of Interstate 57. 



.DAYS TWO THROUGH SEVEN...Wednesday through Monday.



  High Swim Risk at Lake Michigan Beaches. 



.SPOTTER INFORMATION STATEMENT...



  Spotter activation will not be necessary through tonight.



GENERAL STORM MOTION OF THE DAY:



  Moving toward the east at around 25 mph. 



$$



LMZ740>745-200945-

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-

445 AM CDT Tue Aug 19 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...Today and Tonight.



Weather hazards expected...



  Limited Thunderstorm Risk.



.DAYS TWO THROUGH SEVEN...Wednesday through Monday.



Wednesday...

  Hazardous conditions for small craft are likely.



$$



Borchardt



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