This event was a training squall line that affected 3-5 counties in an east-west line. Maybe 40 miles north-south, 100 miles E-W.
Normally dry flatlands, far from waterways, with 3-5 feet of rushing floodwaters.
My son had a swim meet on the far side of it, so we punched thru it, in the jeep, twice.
One foot of moderate speed flowing water over one road was the worst we encountered on the way down, while detouring around a section of I-65 closed by flooding.
The swim meet was delayed by lightning, and the organizers seemed unaware of what what happening just one county north.
We cancelled our participation and fled, knowing that water flows south in these parts. Knowing further that large affected areas feed two rivers which join just above this town, and flow between town and I-65.
We were about the only participants to make it home that day. The others were cut off, and had to stay for 3 days.