668 FLUS43 KLOT 282336 AAA HWOLOT Hazardous Weather Outlook...UPDATED National Weather Service Chicago/Romeoville IL 636 PM CDT Sun Jun 28 2026 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-292345- 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- 636 PM CDT Sun Jun 28 2026 /736 PM EDT Sun Jun 28 2026/ This Hazardous Weather Outlook is for portions of north central Illinois...northeast Illinois and northwest Indiana. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Monday through Wednesday... Elevated Excessive Heat Risk. Thursday... Elevated Excessive Heat Risk. Limited Thunderstorm Risk. Friday and Saturday... Limited Thunderstorm Risk. DISCUSSION... Dangerous heat with afternoon heat index values over 100 degrees is expected Monday through at least Wednesday. Depending on potential thunderstorm coverage late in the week, the dangerous heat may persist into the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be necessary through tonight. $$ LMZ740>745-292345- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 636 PM CDT Sun Jun 28 2026 This Hazardous Weather Outlook is for portions of the Illinois nearshore waters of Lake Michigan and the Indiana nearshore waters of Lake Michigan. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Monday and Tuesday... Hazardous conditions for small craft are likely. Thursday through Saturday... Limited Thunderstorm Risk. $$ Petr Visit us at www.weather.gov/chicago