FLUS43 KLOT 220850 HWOLOT Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 350 AM CDT Fri Oct 22 2021 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- 350 AM CDT Fri Oct 22 2021 /450 AM EDT Fri Oct 22 2021/ This Hazardous Weather Outlook is for portions of North Central Illinois...Northeast Illinois and Northwest Indiana. .DAY ONE...Today and Tonight. Weather hazards expected... Elevated Frost Risk, mainly in north-central Illinois. DISCUSSION... Widespread frost is anticipated tonight northwest of a line from Mendota to Aurora to Antioch. Elsewhere away from the Lake Michigan shore, patches of frost may develop tonight. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Saturday... Limited Thunderstorm Risk. Sunday... Limited Severe Thunderstorm Risk, south of I-80. Limited Excessive Rainfall Risk, south of I-88 Limited Non Thunderstorm Wind Risk. Limited Lakeshore Flooding Risk, mainly Illinois shore. Monday... Limited Non Thunderstorm Wind Risk. Limited Excessive Rainfall Risk, south of I-88 Limited Lakeshore Flooding Risk, mainly Illinois shore. Wednesday... Limited Thunderstorm Risk. DISCUSSION: Widespread, soaking rain and blustery winds are becoming increasingly likely Sunday and Monday. Rises in river and stream levels will occur, and flooding may occur on roadways near leaf- clogged sewer drains. Additionally, flooding of parks and trails along the Lake Michigan shore may occur, particularity in Illinois. Finally, severe thunderstorms cannot be ruled out Sunday south of I-80. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be necessary through tonight.
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