the path of a tornado as suggested by Terry Meaden?

Having watched one last year I have a lot of time for his idea. I'd had difficulty imagining a British one big or wide enough to make a destruction path equating with a cursus, but the one I saw was actually a number of them, coming and going and swinging from side to side. They persisted for half an hour and travelled a good few miles. They might well have marked a shape similar to a cursus if you took the extreme left one and the extreme right one as the limits of the destruction path, which enabled one side to be straight and one to be kinked, per some cursuses.

The direction was SW-NE, like most tornados and most cursuses.