Gezani has hit just 11 days after Cyclone Fytia killed 12 people and displaced 31,000 in northwestern Madagascar.
More than half the population is affected and most infrastructure destroyed in Toamasina, Madagascar's main port.
Gezani is forecast to return to cyclone status when it strikes southern Mozambique on Friday evening.
A cyclone packing violent winds has killed at least 31 people in Madagascar's second-largest city, ripping roofs off buildings, causing flooding and felling trees, the Indian Ocean island's disaster ...
Add Yahoo as a preferred source to see more of our stories on Google. At least 35 people have died after a powerful cyclone struck Madagascar, says the disaster authority in the Indian Ocean island.