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|Title:||Natural Hazards- Tornado Trouble|
|Abstract:||The word Tornado comes from the Spanish word, <i>tronada</i>, meaning thunderstorm. Thunderstorms are usually classified into three types: singlecell, multi-cell, and super-cell. Super-cells can produce hail, reach damaging wind speeds, cause flooding, dangerous cloudto- ground lightning, and of course, heavy rain. Usually about a third of super-cell thunderstorms go on to produce tornadoes. For this to happen, first a meso-cyclone or a tornadoprecursor has to form. A mesocyclone is a deep, continuously rotating updraft. Once a mesocyclone forms in a super-cell, there’s a roughly 50% chance that it will escalate into a tornado in around half an hour.|
|Appears in Collections:||SR Vol.47(04) [April 2010]|
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