Hazardous Weather Outlook
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
691 FLUS43 KLOT 230833 HWOLOT Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 333 AM CDT Sat Aug 23 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-240845- 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- 333 AM CDT Sat Aug 23 2025 /433 AM EDT Sat Aug 23 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 This Afternoon. High Swim Risk Lake Michigan Beaches Porter County Indiana. DISCUSSION... Isolated thunderstorms are possible this afternoon southeast of Interstate 55. Locally strong gusty winds will be possible with these storms. Northwest winds will produce high waves and dangerous swimming conditions at Lake Michigan beaches in Porter County Indiana this evening through Sunday morning. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be necessary through tonight. GENERAL STORM MOTION OF THE DAY: Moving toward the southeast at 30 to 40 mph. $$ LMZ740>745-240845- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 333 AM CDT Sat Aug 23 2025 This Hazardous Weather Outlook is for portions of the Illinois nearshore waters of Lake Michigan and the Indiana nearshore waters of Lake Michigan. .DAY ONE...Today and Tonight. Weather hazards expected... Limited Thunderstorm Risk This Afternoon. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Sunday and Monday... Hazardous conditions for small craft are likely. $$ Visit us at www.weather.gov/chicago