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The earth is a very busy place. It is never calm. Nature takes its toll on us every day with rainstorms, snowstorms, hailstorms, and so many other kinds. But, even if we are tired of these storms, we wouldn’t be able to survive without them. Yet, sometimes, these storms may get a little too serious and dangerous results may occur on land or on water. One of these consequences is tornadoes. Tornadoes are severe, rapid, swirling winds than can go at top speed for hours on end. They stretch from specific clouds to the ground and move far distances to create havoc and ruin. Tornadoes are usually formed from a cloud called a supercell. Supercells are cumulonimbus clouds, but the only difference is that they have a rotating wall cloud, the big extension from the base of a cumulonimbus cloud. That rotation is cause by a mesocyclone. Scientists don’t exactly know how a tornado is formed; they only have a general idea of the formation. They believe that a tornado is formed from the mesocyclone, which is a rotating updraft, in the wall cloud. Mesocyclones are formed when winds at different altitudes come together and tumble and fall, creating a “cylinder” form. If a supercell thunderstorm cloud comes, its updrafts will pull the mesocyclone up, causing the mesocyclone to then spin upwards. The updrafts blend in with the mesocyclone and start to rotate as well. If the mesocyclone tightens and stretches out, it will rotate faster and rapid winds may form inside the mesocyclone. Precipitation from the supercell will push the tail of the winds down, and when it touches the ground, it is called a tornado. Although, not all mesocyclones may form tornadoes. Tornadoes have very high winds, and may cause little to severe damage to many cities. Tor... ... middle of paper ... ...ooted. Category F3: Severe tornado (254-331 km/h) severe damage. Roofs and some walls are torn off. Trains are overturned. Most trees are uprooted. Heavy cars are thrown Category F4: Devastating tornado (333-418 km/h) Devastating damage. Well built houses are flattened. Houses with weak structures are blown off. Cars are thrown. Category F5: Incredible tornado (420-511 km/h) incredible damage. Strong houses are lifted up and thrown. Trees are pulled out of the ground.” “Enhanced Fujita Scale: EF0: 104- 136 km/h EF1: 138-177 km/h EF2: 178-217 km/h EF3: 218-265 km/h EF4: 267-321 km/h EF5: 321 km/h and over” Usually, when you know a tornado is coming, the rotating wall cloud will be one of your first signs, but you can never be certain when a tornado is coming. In fact, tornadoes occur almost instantly that people have very limited time to get to a shelter.

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