Hurricane And Tornado Formation

Hurricane and Tornado Formation##

by Temwani Mhango

Hurricane Formation
Hurricanes are extremely violent storms compared to the ones experienced in New England. Hurricanes usually form over large warm bodies of water, usually over the Atlantic Ocean in the late spring through early fall months. The water vapor rises and condenses into small droplets of water creating a large cloud. The carioles affect then cause the clouds to spin in a vortex creating a tropical depression. The storm strengthens over the warm water creating a central eye of high pressure air. It is given a name when the wind speed is over 59 mph and considered a tropical storm. When the wind speed reaches 74 mph the storm is finally classified as class one hurricane. The storm weakens or dies when it passes over land or cold water. This is because hurricanes need warm water vapor to keep on growing and spinning. Otherwise it just fades into a thunderstorm.

Hurricanes are classified as by wind speed in classes of 1 through 5. One being the weakest has wind speeds of 74-95 mph. A class 2 hurricane’s wind speed could be 96-110 mph. Class 3 hurricanes have speeds of 111-130 mph. A class 4 has wind speeds of 131-155. A class 5 has any wind speed of over 156 mph.

Tornado Formation
A thunderstorm that creates a tornado is called a tornadic storm. They are usually created on a warm front. The warm air has less pressure so the cold dense air from either side starts flowing into the warm air to create equal pressure. A tornado forms when the air flowing in starts to cause an elliptical movement. This movement causes the cloud to rotate all the way to the ground and make a low pressure system in the center. The center of the tornado usually has an updraft that can lift very large objects to very high altitudes in a very short time.

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