Tornadoes Essay Research Paper A tornado is — страница 2

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of low pressure south through Texas . At the upper levels of the atmosphere, a powerful trough was spreading strong winds aloft over much of the eastern half of the country. With the warm air in place and a cold front approaching, along with the favorable upper air dynamics , intense thunderstorms developed rapidly in the afternoon of April 3. Those thunderstorms spawned nearly 150 tornadoes across parts of the Midwest , ohio and tennessee river valleys and southern states from the afternoon of the 3rd to the early morning of the 4th . Six F5’s were spawned. One hit Guin, Alabama destroying the entire town and killed 20. The tornado lifted back just before reaching the city limits and entering Huntsville. In Brandenburg, Kentucky, 30 people were killed and the town was left in

ruins by an F5 tornado. And an f5 in Xenia, Ohio +300 homes were destroyed and 2100 were damaged and 34 people were killed.FUJITA-PEARSON SCALEF0Wind: 40-72mphLight Damage: Some chimneys damaged, twigs and branches broken off trees, shallow rooted trees pushed over, signboards damaged some windows broken.F1Wind: 73-112mphModerate Damage: Surface of roofs peeled off, mobile homes pushed off foundations or overturned out buildings demolished moving autos pushed off the roads, trees snapped or broken beginning of hurricane speed winds.F2Wind: 113-157mphConsiderable Damage: Roofs torn off frame houses, mobile homes demolished, frame houses with weak foundations lifted and moved , large trees snapped or uprooted light object missiles generated. F3Wind: 158-206mphSevere Damage :Roofs

and some walls torn off well constructed houses trains overturned most trees in forecast uprooted heavy cars lifted off the ground and thrown weak pavement blown off the roads. F4Wind: 207-260mphDevastating Damage: Well constructed houses leveled structures with weak foundations blown off the distance cars thrown and disintegrated trees in forest uprooted and carried some distance awayF5Wind: 261-318mphIncredible Damage : Strong frame houses lifted off foundations and carried considerable distance to disintegrate automobile sized missiles fly through the air in excess of 300 feet trees debarked incredible phenomena will occur.