Landslide

Heavy rainfall can also trigger landslides: the movement of rock, soil or debris down a slope under gravity. As water saturates slope material, it adds weight, weakens the material and reduces friction. If the forces resisting movement become too weak to hold the material in place, the slope fails.

A tropical cyclone is a powerful rotating storm that develops over warm tropical seas. Its strong winds and heavy rainfall create several linked physical hazards: high winds, intense rainfall, storm surges, coastal flooding and landslides.