Thank god I found a website that saved my day!!!!
Quote:
"The direction in which a tornado twists depends a lot upon which hemisphere you're in. In general, most tornadoes in the northern hemisphere rotate cyclonically, or counter-clockwise. Only around five percent of tornadoes in the northern hemisphere rotate clockwise, or anti-cyclonically. In the southern hemisphere, however, most tornadoes rotate clockwise."
So, mine is either one of those rare ones that rotate clockwise, or it's placed in the southern hemisphere. It doesn't look like somewhere in the southern hemisphere, so I decided it's a rare one!!!
So far so good. But what about the direction of the wind? I guess, if most tornadoes in the northern hemisphere rotate counterclockwise doesn't mean, that the wind is always blowing in the same direction. So I'll defiantly leave the tornado and the wind as it is, since changing the wind's direction would look weird compared to the movement of the clouds, especially the distant ones, and I'll desperately take care of the animation of the closer bushes now, which is a tough one, since bending of objects in a population is another problem. I rotated the trees slightly on the X-axis to fake some swaying, but for small bushes this might look strange.