The National Weather Service warned on Thursday of "generational" floods in the U.S. South and Midwest as storms ripped across a swath of the country from Texas to Michigan, whipping up tornadoes and killing two people.

Severe storms are sweeping the U.S. South and Midwest, spawning damaging tornadoes and causing flooding in multiple states into Thursday morning. The big picture: The National Weather Service warned the "powerful Spring storm system will bring a barrage of life-threatening weather hazards" to parts of the Lower Ohio Valley and Mid-South overnight.