


Hazardous Weather Outlook
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
312 FLUS43 KLOT 251524 HWOLOT Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1024 AM CDT Wed Jun 25 2025 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-261530- 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- 1024 AM CDT Wed Jun 25 2025 /1124 AM EDT Wed Jun 25 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...with an associated: Level 1 of 5 Damaging Wind Risk...up to 60 mph. Limited Flooding Risk. Limited Excessive Heat Risk south of I-80. DISCUSSION... Isolated to widely scattered thunderstorms may develop again this afternoon and evening. The strongest storms will be capable of producing gusty to locally damaging wind gusts as well as heavy downpours. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Thursday... Limited Thunderstorm Risk...with an associated: Level 1 of 5 Severe Thunderstorm Risk. Limited Flooding Risk. Limited Excessive Heat Risk. Friday through Sunday... Limited Thunderstorm Risk. Limited Excessive Heat Risk. Monday... Limited Thunderstorm Risk. DISCUSSION... Periodic thunderstorm chances will continue through early next week. .SPOTTER INFORMATION STATEMENT... Spotters activation is not likely, but may be needed this afternoon and evening. GENERAL STORM MOTION OF THE DAY: Moving toward the northeast at 25 to 30 mph. $$ LMZ740>745-261530- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1024 AM CDT Wed Jun 25 2025 This Hazardous Weather Outlook is for portions of the Illinois nearshore waters of Lake Michigan and the Indiana nearshore waters of Lake Michigan. .DAY ONE...Today and Tonight. Weather hazards expected... Limited Thunderstorm Risk...with an associated: Level 1 of 5 Thunderstorm Wind Gust Risk...up to 50 kts. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Thursday... Limited Thunderstorm Risk...with an associated: Level 1 of 5 Severe Thunderstorm Risk. Friday through Monday... Limited Thunderstorm Risk. $$ DK Visit us at www.weather.gov/chicago