I also thought the immediate surroundings of a tornado should have trees askew, and more rubbish and small dirt flying around, but that takes a lot more work, and separate pops of trees. I'll keep this largely to myself, but I'll tell you the twister is a metacloud, restricted by a warped simple shape.
Perhaps the mountains are not appropriate, but I liked it, never intended it to be 'reality'. Maybe this next version is more real. Only the sand ripples on the rocks is a bit off.
