What Causes Hurricanes

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Every year

Coastal areas brace up themselves for violent windstorms known as hurricanes. The big question remains how these storms form and develop? The hurricane damage is measured in categories; the categories are decided based on the amount of harm that every category can produce.

Depending on where they start in the worldwide, they may be known as typhoons or cyclones but those that form over the Atlantic or eastern Pacific is known as hurricanes. A tropical storm forms when the winds in the rotating storm reach 39 mph, and when the wind speeds attain 74 mph, the storm is officially known as a hurricane. If it exceeds 74 mph to 150 mph the storm is predicted to be extremely high and disastrous.This storm, which is the strongest and most violent type of tropical storm on the Earth, are formed above swathes of Warm Ocean.

Here is an explanation of what causes hurricanes and how they are formed.

Hurricane Hellene, seen here in a photo captured from aboard a 2006 space shuttle mission, rages through the Earth’s atmosphere. See more storm pictures. NASA/SCIENCE FACTION/GETTY IMAGES. Credits howstuffworks

How the Hurricanes Form

Tropical storms are like big engines that use warm, moist air as fuel, which is why they form best overheat ocean waters close to the equator.

Hurricanes start close to the equator where warm and wet air above the water rises. When the humid air rises and condenses, leaving a place of lower air pressure above the ocean’s level, that is quickly filled by air within the surrounding areas.

As the warmed, moist air rises and cools off, the water inside the air forms clouds. The clouds and wind continue to spin and grow, fed by way of the ocean’s warmth and water evaporating from the floor.Air from surrounding areas with higher air pressure pushes into the low-pressure location. Then, the new air becomes warm and moist and rises, too. Water vapor is the “gas” for the hurricanes as it releases the “latent warm temperature of condensation” whilst it condenses to form clouds and rain, warming the surrounding air.

If you could slice into a tropical cyclone, it would look something like this. The small red arrows show warm, moist air rising from the ocean’s surface, and forming clouds in bands around the eye. The blue arrows show how cool, dry air sinks in the eye and between the bands of clouds. The large red arrows show the rotation of the rising bands of clouds. Credits nasa

Usually, the warm temperature released in this manner in tropical thunderstorms is over excited thru wind shear, which blows the tops of the thunderstorms, but while there can be little wind shear, this heat builds up, inflicting low pressure to form.

The low-pressure motives wind to begin to spiral inward within the course of the middle of the low.

Storms that form from the north of the equator spin counterclockwise, those from the south of the equator spin clockwise, and this peculiarity is because of Earth’s rotation on its axis.As the storm system rotates faster and quicker, an eye forms in the center. It is very calm and clear in the eye, with very low air pressure. Higher pressure air from above flows down into the eye.

When the winds

In the rotating storm reach 39 mph, the storm is known as a “tropical storm”. And at the same time as the wind speeds reap 74mph, the storm is formally a tropical cyclone, or hurricane.

Hurricanes typically weaken after they hit the land, due to the fact they are not being fed by the energy from the ocean waters.

However, they regularly pass and travel far inland, dumping many inches of rain and inflicting hundreds of wind damage before they die out absolutely.Hurricane depth is based totally upon the best sustains the wind velocity the storm is producing.In lower areas, the hurricane causes an awful lot of the damage which may be from the “hurricane surge”, in which water is being blown onshore by the high winds rises hastily.

 

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The hurricane surge can smash the lower floors of some buildings, or even destroy the foundations of some residences causing the homes to wash off.The hurricane surge can also trap residents from evacuating along low-lying escape routes.Sometimes the hurricane will merge with an extra-tropical (non-tropical) storm system, which can cause temporary intensification of the hurricane, which was the case with Hurricane Sandy which hit New England in late October 2012.

The hurricanes gradually die as they pass through over cooler waters,

which do not have the warm temperature power required to evaporate sufficient water vapor into the environment to energize the storm.

If the storm crosses over to land, the heat supply is eliminated entirely, with the removal of the energy source, and the greater ground friction of the land’s terrain and vegetation, and the storm winds rapidly decrease.

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Feature Image – Jerry Bowley

Karen Stiles

Karen Stiles

My name is Karen Stiles, I love the world and what its made of, research and help in bringing the world closer to our understanding.
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