Hurricanes

Hurricane is the name given to tropical cyclones when these eddies reach the Caribbean. The rotation speed of the wind around the axis of the hurricane can reach 300 km/h, speed exceeded only by tornadoes of the American Plains. The scrolling speed of the hurricane is about 20 – 30 km/h, and the effects on its way are devastating, dragging everything they find in their path. To cause a hurricane, the water temperature should be above 24 C. The size of a hurricane is located between 100 and 300 km, while that of an extratropical cyclone can have between 1,000 and 3,000 km in diameter. Moved on tropical liquid surfaces, the hurricanes will be increasing its size. To rain, the air heats up, it expands and rises, working Hurricane continuously as a heat engine while you have heat. If we draw a section, warm air enters saturated that it ascends and cools, condensing some of the liquid that comes with, and forming clouds in the vicinity of the Cyclone.

The center of the hurricane is called eye and can reach between 5 and 15 km. The eye of the hurricane is an area of very low pressure which is capable of picking up whatever is in its path, all accompanied by enormous rainfall caused by the large amount of moisture stored the hurricane as it passes through the warm waters of the Caribbean. These clouds may produce rains of up to 5 million m3 per hour. The duration of a hurricane can be several weeks and they may cause major flooding. While on the ocean will increase its virulence.

When the hurricane hits the American Plains through the Mississippi Valley, leave receive the energetic contribution of the warm, saturated air, so Hurricane ends up exhausted. The axis of the cyclone tends to lie parallel to the axis of the Earth. On dry land, it is cold and without moisture, loses the conditions for regeneration and it is disappearing. Other hurricanes, however, do not penetrate through the Valley of the Mississippi as it advances through the Atlantic coast, driven by the Gulf stream, located until 40 latitude North, reaching up to New York (of course not come already with the strength that had in the tropical zone, but they rather have degenerated into an extratropical cyclone). Some cyclones that reach Europe have their origin in them. It is noteworthy the fact of the periodicity of the formation of hurricanes. There may be several ai year hurricanes, but all of them occur in the same period, generally the fall of summer.