A tsunami is a series of huge (hailstorms/waves) that occur as the result of a violent underwater disturbance, such
as (an earthquake /tornado) or volcanic (hazard /eruption). The waves travel in all directions from the epicenter
of the disturbance. The waves may travel in the open sea as fast as 450 miles per hour. As they travel in the open
ocean, tsunami (waves/funnels) are generally not particularly large - hence the difficulty in detecting the approach
of a tsunami. But as these powerful waves approach shallow waters along the coast, their quickness is slowed and
they consequently grow to a great height before (occurring/smashing) into the shore. They can grow as high as
100 feet; the Indian Ocean tsunami generated waves reaching 30 feet.​

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