“Tornadic waterspouts”, also accurately referred to as “tornadoes over water”, are formed from mesocyclonic action in a manner essentially identical to traditional land-based tornadoes in connection with severe thunderstorms, but simply occurring over water.[7] A tornado which travels from land to a body of water would also be considered a tornadic waterspout.[8] Since the vast majority of mesocyclonic thunderstorms occur in land-locked areas of the United States, true tornadic waterspouts are correspondingly rarer than their fair-weather counterparts. However, in some areas, such as the Adriatic, Aegean and Ionian seas, tornadic waterspouts can make up half of the total number.[9]
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