is it possible to make a spinning and moving tornado in modmaker? and im not talking about some weak small tornado, im talking about an EF4 tornado. also can the tornado be connected to a cloud and still be moving?

yes it is possible, in modmaker menu find Objects tab, cylinder shape, mass 0.01, tick 'enable' on the top, then go to Adv tab, there you can adjust friction, hardness and thrust frames. experiment with different values and when you're done, hold Alt key and press F4