specifically, ... a small, relatively weak rotating column of air over water beneath a Cb or towering cumulus cloud
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Valdkond ICAO lisade põhjal loodud klassifikaatori järgi: Lennumeteoroloogia
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Waterspouts are less intense and smaller than tornadoes; a waterspout rarely lasts more than 30 minutes, is only 10 meters in diameter and approximately 100 meters deep.
