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SR Vol.47(04) [April 2010] >

Title: Natural Hazards- Tornado Trouble
Issue Date: Apr-2010
Publisher: CSIR
Abstract: The word Tornado comes from the Spanish word, tronada, 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‚Äôs a roughly 50% chance that it will escalate into a tornado in around half an hour.
Page(s): 56-57
ISSN: 0036-8512
Source:SR Vol.47(04) [April 2010]

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