I saw somewhere a simple topographic map showing the western Appalachian mountains and the affected areas to the east. The rain falling on the mountains flowed eastward through all the valleys and flooded the towns. It made perfect sense. Also, remember, the are already had been saturated with rain for three days, and so when the winds blew, the trees were easily pushed over.
The key thing is to know what actually happened.
My theory is a dam failure (caused by huricane/rain or intentional), because most of the videos we see are from the areas near the river.
https://greatawakening.win/p/1995LpnsN3/how-the-fontana-dam-is-doing-and/
I saw somewhere a simple topographic map showing the western Appalachian mountains and the affected areas to the east. The rain falling on the mountains flowed eastward through all the valleys and flooded the towns. It made perfect sense. Also, remember, the are already had been saturated with rain for three days, and so when the winds blew, the trees were easily pushed over.