TSUNAMI - TWISTER
Wednesday, March 3, 2010
THE WORLD
DISASTERS
Tsunami TWISTER
It emerged from thunderclouds over the state of Missouri, USA, at 1 pm on 18 March 1925. Over the next three hours, the longest-lasting and most destuctive tornado in history ploughed through ten towns. At times over 1 km wide and moving faster than a speeding car, the twister smashed thousands of homes and killed 689 people.
Tornadoes are violent thunderstorms, caused when warm, wet air is drawn up from the ground and meets colder air moving down. The opposing draughts combine in a corkscrew motion, sending a violently spinning funnel of air plunging down to the ground.
Merciless Killer
The most powerful twisters smash and grab everything in their way. Buildings, vehicles and even the ground itself are sucked up into their vortices. The bodies of people caught up in the 1925 storm were hurled 1.5 km from its path.
Buildings in the path of a tornado often look as if they have exploded. Twisters tear at solid structures like a pair of giant hands wrenching savagely in opposite directions.
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