A line of strong to severe storms will move across all of southern WI well into the early morning hours. Damaging winds will be the main threat, but cannot rule out isolated tornadoes and localized flooding.
Multiple rounds of storms this evening through tonight will bring rising rivers and local flash flooding to central Wisconsin (Sauk County to Ozaukee County northward).
Storms will redevelop Tuesday afternoon and evening, bringing very large hail, damaging winds, and tornadoes. Storms will transition to a line overnight, bringing damaging winds and isolated tornadoes.