One product issued by NWS for: Naperville IL
Hazardous Weather Outlook
Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 343 PM CDT Sun May 19 2024 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-202045- 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- 343 PM CDT Sun May 19 2024 /443 PM EDT Sun May 19 2024/ This Hazardous Weather Outlook is for portions of north central Illinois...northeast Illinois and northwest Indiana. .DAY ONE...Tonight. Weather hazards expected... Limited Evening Thunderstorm Risk. DISCUSSION... Isolated thunderstorms can be expected south of the Illinois and Kankakee Rivers through early evening. There is also a slight chance of thunderstorms toward daybreak Tuesday near the Interstate 39 corridor. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Monday afternoon and early evening... Significant Thunderstorm Risk with a: Limited Severe Thunderstorm Risk. Limited Flooding Risk. Tuesday evening and night... Elevated Severe Thunderstorm Risk. Limited Flooding Risk. Friday night and Saturday... Limited Thunderstorm Risk. DISCUSSION... Scattered thunderstorms are likely Monday, especially during the afternoon and early evening. Conditions will probably become supportive for storms briefly becoming severe, mainly between 2 PM and 8 PM. If any storms do become severe, the primary hazards would be hail up to around 1 inch in diameter and wind gusts up to around 60 mph. There is a chance thunderstorms early Tuesday morning, mainly across northern Illinois northwest of Interstate 55. If any storms do occur, the threat of severe weather appears rather low. Additional thunderstorms are likely Tuesday evening into Tuesday night. Some of these storms could become severe, with the highest chances of severe weather near and west of the Interstate 39 corridor. The primary potential severe hazards Tuesday night would be damaging winds and perhaps brief tornadoes. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be necessary through tonight. GENERAL STORM MOTION OF THE DAY: Moving toward the east at less than 10 mph. $$