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13:30 GMT +3 hours30 March 2015
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Tornado formation

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Tornado formation
© RIA Novosti
Tornados form when two large air masses of varying temperature and humidity collide, with warm air in the lower layers and cold air in the upper layers.

Tornados form when two large air masses of varying temperature and humidity collide, with warm air in the lower layers and cold air in the upper layers.