My understanding of this unusual phenomena is that the freak waves were due to the combined effects of a deep depression to the south of the mascarene islands associated with a strong anticyclone which was also prevalent at the time. The combined effects of these weather systems caused huge swells which affected all the islands in the area, unfortunately causing loss of life to some fishermen and coast guards. My deepest sympathy goes to the families affected and I do hope that adequate help ( both psychological and financial ) will be given to these people in their time of need. It is true that the weather is changing worldwide and we are probably now feeling the effects of global warming!!!
I do hope however that this will not deter people from visiting Mauritius as these were freak weather conditions which are relatively rare.