Board Thread:Questions and Answers/@comment-216.56.11.130-20141015191240/@comment-24276288-20141016011253

a whirlwind happens when a hot wind current and a cold wind current meet each other, the hot air goes up and the cold down which form a vortex

making a whirlwind is not difficult the problem is that if there is no hot and cold wind currents to fuel it then it will disappear actualy i wont even form

if you have no better idea them try to vizualize wind currents as lines hot currents as red lines and cold currents as as blue lines them if you want to make a whirlwind use em to mix both these currents, if it works they may start spining against each other and make a little whirlwind