This is impossible. A cyclone cannot cross the equator. The reason why this cannot happen is because the Coriolis Force reduces to almost nothing at the equator. The effect on a cyclone would be to cause it to dissipate.
it depends how powerful the cyclone is if it is a very powerful cyclone then the damage could be extremely big but if its not a very powerful one then the damage would be much much less and not as many cassualtys would be made
Cyclone too cause impacts on hydrosphere. Cyclone causes water displacement from water bodies. it causes streaming movements in water which may be threat to aquatic life. It may drown ships or boats of fisherman and kill them.