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Causes. There are two main factors that are responsible for causing hurricane storms, viz. warm water and moist, warm air. This is the reason why they begin in tropical regions. They occur when the moist, warm air from the surface of the ocean rises and meets the cooler air.
Best Answer: Cyclones are huge revolving storms caused by winds blowing around a central area of low atmospheric pressure. In the northern hemisphere, cyclones are called hurricanes or typhoons and their winds blow in an anti-clockwise circle.In the southern hemisphere, these tropical storms are known as cyclones, whose winds blow in a clockwise circle.s the cyclone builds up it begins to move. It is sustained by a steady flow of warm, moist air. The strongest winds and heaviest rains are found in the towering clouds which merge into a wall about 20-30 km from the storm's centre.