Showers and storms will rumble through Tuesday, packing not only a severe punch but also an efficient rain-producer punch. Loads of moisture will mean storms will come in plenty wet, but it's the multiple-round aspect that brings the flooding.
Sprinkle on top a touch of orographic lift off of the Ozark Mountains in the area, and you have a bad recipe over the next few days. A flood watch has already been issued before the first drops have fallen.
3 to 6 inches of grand total rainfall will be possible, with some localized areas potentially surpassing those numbers.
The rainfall won't be as intense the farther north you find yourself, up to Minnesota and the Dakotas. What the rain lacks in intensity will be made up in effort, with persistent rain driving up totals. The threat of flooding will nudge eastward on Tuesday.
Like every flooding situation, never try to cross water over the roadways, since only a foot of it is needed to float your vehicle. Know your risk in your home if you need to seek higher ground when a Flash Flood Warning is issued for your location.