In my experience, if you can see it close enough to feel ANY wind, your life is in danger. Ive seen them change direction so quickly, no human or animal could avoid its path. When I seen a tornado throw cars around like The Hulk, the tornado changed direction and started heading for the highway in my direction, but then, it changed direction to west, then north, the back towards us. It was a nightmare and I wouldnt have been able to get away even if I had a Tesla in luda mode at top speed with no cars on the road.
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I didn't know that. I wonder what makes the Tornado Alley in the USA so ~ tornado prone?
I hate dust devils, they are all over the place down here in the spring when we go Dove hunting. . . . we had to start wearing motocross goggles.