Encyclopedia
waterspout
a small-diameter column of rapidly swirling air in contact with awater surface. Waterspouts are almost always produced by aswiftly growing cumulus cloud. They may assume many shapesand often occur in a series, called a waterspout family, producedby the same upward-moving air current. Waterspouts are closelyrelated to other atmospheric phenomena such as tornadoes,whirlwinds, and fire storms.
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