In the southwest basin of the Indian Ocean, cyclone activity generally begins in November. Of course, systems sometimes form early in the winter. But overall, the last two months of the year are synonymous with the launch of cyclonic activity in this basin. This 2016/2017 season is particularly atypical. First of all, we had a strong Tropical Storm in July, provoking a time worthy of the rainy season on the big Mascarenes in the middle of winter. Then, during the month of October, a remarkable subtropical depression generating gusts of the order of 130 km/h evolved in the south of Madagascar. No systems baptized in novembre and december. We must go back to the 2000/2001 cyclone season to find a similar situation. At that time it was the intense cyclone ANDO which put an end to the mutism of the southwestern basin at the beginning of January 2001.
