This is the NWS Storm Prediction Center's outlook for tornadoes and severe thunderstorms tomorrow.
And, for Monday, the threat for severe thunderstorms migrates east.
As if that wasn't enough, the flood threat continues east of the Mississippi. The highest flood threat is in the Ohio Valley where the ground is already saturated.
In the Northeast AccuWeather predicts that rapid snowmelt will contribute to the flood threat:
ADDITION: One of our readers asked for an explanation of the lines on the severe weather charts. The white line is 5%, green is 15% and yellow 30% probability of severe weather (defined, in this case, as a tornado, hail 1" in diameter or larger, or thunderstorm winds of 60 mph or stronger). Hatching means the potential a tornado ≥F-2 intensity, hail ≥2", or thunderstorm winds ≥75mph.