Tropical Cyclones, Hurricanes and Typhoons What is the difference between the three? Cyclones are formed in the Indian Ocean, hurricanes in the Middle Atlantic and typhoons in the Pacific Ocean. Cause: Start when high temperatures cause air to rise from the surface of the sea. The rising air causes local thunderstorms, and sometimes these storms come together and create a strong flow of warm, rapidly rising air, creating an area of increasingly low pressure. (Applies to hurricanes + typhoons as well) Ocean water must be 26 degrees celsius and at least 50 metres deep to form a cyclone/hurricane/typhoon. Characteristics Have very low pressure Often 600-900 km across Bring torrential rain, thunder, lightning, and strong winds Can cause widespread damage On average last for 10 days, but can last for up to 4 weeks Have to form on large bodies of water Don't remain where formed. They follow the direction of prevailing winds and ocean cur...
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