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| 481 FLUS43 KLOT 011851 HWOLOT Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 151 PM CDT Wed Apr 1 2026 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-021900- 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- 151 PM CDT Wed Apr 1 2026 /251 PM EDT Wed Apr 1 2026/ This Hazardous Weather Outlook is for portions of north central Illinois...northeast Illinois and northwest Indiana. .DAY ONE...This Afternoon and Tonight. Weather hazards expected... Elevated Flooding Risk south of Interstate 80. Limited Thunderstorm Risk. DISCUSSION... Showers and thunderstorms will move across the area tonight. Flooding of low lying areas such as fields and ditches may occur, mainly south of Interstate 80. Severe weather is not expected. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Thursday... Significant Thunderstorm Risk...with an associated: Level 3 of 5 Severe Thunderstorm Risk. Limited Flooding Risk. Friday... Limited Thunderstorm Risk...with an associated: Level 1 of 5 Severe Thunderstorm Risk. Saturday... Limited Flooding Risk. Limited Thunderstorm Risk. DISCUSSION... There is a threat for a regional severe weather outbreak tomorrow, especially west of Interstate 55. Tornadoes are the main threat. Additional waves of showers and storms are possible Friday afternoon into Saturday morning. A few storms may be severe. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be necessary through tonight. GENERAL STORM MOTION OF THE DAY: Moving toward the northeast at 35 mph. $$ LMZ740>745-021900- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 151 PM CDT Wed Apr 1 2026 This Hazardous Weather Outlook is for portions of the Illinois nearshore waters of Lake Michigan and the Indiana nearshore waters of Lake Michigan. .DAY ONE...This Afternoon and Tonight. Weather hazards expected... Hazardous conditions for small craft are likely. Limited Thunderstorm Risk. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Thursday... Hazardous conditions for small craft are likely. Significant Thunderstorm Risk...with an associated: Level 2 of 5 Severe Thunderstorm Risk. Friday... Limited Thunderstorm Risk. Saturday... Hazardous conditions for small craft are likely. Limited Thunderstorm Risk. Sunday through Tuesday... Hazardous conditions for small craft are likely. $$ Borchardt Visit us at www.weather.gov/chicago |
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