What is a Hurricane?

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What is a Hurricane?

Hurricanes are severe tropical storm with wind of 73mph or more. They only occur in the Western Hemisphere over the Atlantic Ocean, the Caribbean Sea, and the Gulf of Mexico. The Hurricane season is from June to November when it is the time of the year when seas and oceans are at their hottest temperature. There are on average six Atlantic hurricanes each year; over a 3-year period, approximately five hurricanes strike the United States coastline from Texas to Maine.

How do Hurricanes form?

Hurricanes need to have tropical oceans, which are over 270C with moisture and light winds. If the right conditions last long enough, a hurricane can produce violent winds, incredible waves, torrential rains and floods.

Hurricanes are made by the rapidly evaporating water, which forms water vapour. During condensation energy is released allowing further convection. From this, clouds form. The sea continues to heat the air, so evaporation, convection and condensation will keep happening. Air is sucked towards the centre of the hurricane to replace the converted air, which creates stronger winds. This is called the "eye". As the uplift increases the stronger the winds get.

Hurricanes rotate in a counter clockwise direction around an "eye" because of the rotation of the earth.

Why are Coastal Regions most at risk from Hurricanes?

When hurricanes move onto land, the heavy rain, strong winds and heavy waves can damage buildings, trees and cars. The heavy waves are called a storm surge.

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Coastal regions are most at risk from hurricanes for some reasons. Two of the reasons are storm surges and that the hurricane losses power on land.

Storm surges are very dangerous and a major reason why you must stay away from the ocean during a hurricane warning or hurricane. Storm surges are simply water that is pushed towards the shore by the force of the winds swirling around the storm. This advancing surge combines with the normal tides to create the hurricane storm tide, which can increase the mean water level 15 feet or more. This rise in water level ...

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