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Hurricanes are tropical cyclones characterized by low pressure center and produce strong winds with flooding rains. Heat of condensation is the prime factor behind occurrence of hurricane. A cyclone has to reach at some specific intensity for acting as hurricane. It needs to pass through two transitional stages which are known as Tropical Depression and Tropical storm. Storms get collected in the tropics which lead to origin of hurricane from ocean. Thermal energy from the surface of ocean with deepening low-pressure center in moist air lifts the air with high pressure in atmosphere that pushes it in an outward movement.

Wind rotation changes the spin of clouds by giving a tight curl. As the wind moves with a gust, depression between the two stages forms a tropical storm. If we focus on shape of high intensity hurricane, we found it circularly symmetrical and with an influence extending over an area of 805 km in diameter. Circumference of this circle is defined as eye wall. This circular shaped hurricane is comprised of moistened air which causes condensation and after it there is a connected release of latent heat takes place from it.

Air push up reaches to a height of thousands of feet above the surface and finally get expelled towards the zone of storm’s fringe. This makes different bands of clouds with velocity of air and condensation to eye wall region. An increase in outward pressure also plays role to maximize wind speed. Temperature of eye wall zone of <a target=”_blank” href=”http://www.weatherfeeder.com/”>hurricanes</a> is warmer as compare to other surrounding fringes of hurricane.

For more insights and further information about hurricanes visit our site http://www.weatherfeeder.com/

Article Source:http://www.articlesbase.com/sports-and-fitness-articles/reasons-behind-occurrence-of-hurricanes-1395349.html

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