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Cyclones
Cyclones are giant, spinning whirlwind storms.
In North America, these are called hurricanes and are called typhoons in Asia.
In order for a cyclone to be identified as a cyclone, it must be travelling over 119 kilometres per hour and it must have been formed over the ocean in a tropical region.
These great storms are usually dangerous and can cause damage to everything in its path.
A cyclone will often bring with them heavy rains that can cause flooding.