We went through a horrendous storm in Missouri about 20 years ago. It was night and I had a hard time deciding whether to leave or not. One could easily drive straight into a tornado driving in the dark.
Rain was coming down horizontally with such force that it was driving around the seals in the trailers window and coming through. We braced ourselves and put stuff on the wall to cushion us if the trailer flipped.
We stayed in our little 22' swaying TT and watched the large group of tent campers across from us flee in their vehicles in the dark - leaving everything behind. I watched their loaded coolers tumble away and their staked tents tear loose and go aloft. They had totes of food and other things that just disappeared into the night.
In the morning there was almost nothing left of their camp.
It was truly terrifying.