The severe weather is expected to bring large hail, damaging winds, and isolated tornadoes to the Northern Plains and Upper Midwest, with the highest risk in eastern North Dakota and northwestern Minnesota. Urban areas such as Chicago, Illinois, and Des Moines, Iowa, face a heightened risk of flash flooding due to repeated rounds of heavy rain. The flood threat is categorized as Level 2 out of 4, with localized flash flooding likely in low-lying and poorly drained areas (FOX Weather).