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SlideshowReport

Tornado Formation

Description
Local storms of short duration
Features
Violent windstorm
Rotating column of air that extends down from a cumulonimbus cloud
Low pressures inside causes the air to rush into the tornado
Winds approach 480 km (300 miles) per hour
Smaller suction vortices can form inside stronger tornadoes

Occurrence and development
Most frequent from April through June
Associated with severe thunderstorms
Exact cause of tornadoes formation is not known
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