South African Weather Service - What is a Tropical Cyclone?A tropical cyclone is a relatively small, intensely developed low pressure cell that usually occur over warm oceans. Its diameter can range between 200 and 2 000 km. It is characterized by a warm centre, very steep pressure gradients and strong cyclonic (clockwise in the southern hemisphere) winds near the Earth's surface.cyclone in south africa,Is South Africa due for a tropical cyclone? - eNCAFeb 10, 2017 . Tropical cyclones in South Africa are rare occurrences and the last has been long forgotten by most South Africans. Is it time for the next to reach our shores?cyclone in south africa,Dineo's dangerous siblings: 4 other cyclones that hit South Africa .Feb 16, 2017 . Cyclone Dineo isn't the first storm to wreak havoc in South Africa or Mozambique. Here are four other storms that have hit the region this century.
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