Hazardous Weather Outlook
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
666 FLUS43 KLOT 211701 HWOLOT Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1201 PM CDT Tue May 21 2024 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-221715- 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- 1201 PM CDT Tue May 21 2024 /101 PM EDT Tue May 21 2024/ 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... Significant Thunderstorm Risk...with an associated: Elevated Tornado Risk. Significant Damaging Wind Risk...locally over 75 mph. Limited Hail Risk...up to 1 inch in diameter. Elevated Non Thunderstorm Wind Risk. DISCUSSION... A potentially dangerous line of severe thunderstorms is expected to move across the region between about 7 PM and 1 AM. Widespread damaging winds, potentially in excess of 75 mph in a few areas, should be expected with this line of storms. In addition, this line will be capable of numerous producing tornadoes, potentially strong. The greatest risk for a strong tornado appears to be near and west of the Interstate 39 corridor. Outside of any thunderstorms, winds could gust over 45 mph this evening into the early portions of the overnight hours. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Friday through Monday... Limited Thunderstorm Risk at times. .SPOTTER INFORMATION STATEMENT... Spotters will likely be needed between 7 PM and 1 AM tonight. GENERAL STORM MOTION OF THE DAY: Moving toward the northeast at 45 to 55 mph. $$ LMZ740>745-221715- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1201 PM CDT Tue May 21 2024 This Hazardous Weather Outlook is for portions of the Illinois nearshore waters of Lake Michigan and the Indiana nearshore waters of Lake Michigan. .DAY ONE...This Afternoon and Tonight. Weather hazards expected... Hazardous conditions for small craft. Significant Thunderstorm Risk...with an associated: Elevated Thunderstorm Wind Gust Risk...possibly over 50 knots. Limited Hail Risk...up to 1 inch in diameter. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Friday through Monday... Limited Thunderstorm Risk. $$ Kluber Visit us at www.weather.gov/chicago Follow us on Facebook, Twitter, and Youtube at: www.facebook.com/nwschicago www.twitter.com/nwschicago www.youtube.com/nwschicago