1 - Seas reach a temperature of 26.5 degrees Celcius in waters at least 60m deep, 2 - The warm ocean heats the air above it causing water to evaporate and the air to rise, resulting in extremely low pressure, 3 - As water vapour rises, it cools and condenses to form cloud and some rainfall, 4 - Where air has risen, more warm moist air is drawn in which will continue to rise, 5 - The rising air is forced to spin by the trade winds and Coriolis effect, 6 - Once the tropical storm is blown over land, it loses its source of energy (warm air heated by the ocean) and therefore begins to dissipate,

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