I was working director when it happened yesterday and can tell you things did get chaotic for a few minutes yesterday. There was some weather in the circuit that created its own local southerly. Aircraft were experiencing about 18kts of southerly down to short final on 34L and R. There were several double go arounds and it kept everyone very busy. Eventually the wind became southerly all the way to the ground hence the change to 16. This only lasted abouted 15mins then we went back to 34. I think everyone involved was very busy during this time as we were all trying to workout the best solution for the conditions.