A waterspout is a whirling column of air and water mist.
Waterspouts fall into two categories: fair weather waterspouts and tornadic waterspouts.
Tornadic waterspouts are tornadoes that form over water, or move from land to water. They have the same characteristics as a land tornado. They are associated with severe thunderstorms, and are often accompanied by high winds and seas, large hail, and frequent dangerous lightning.
Fair weather waterspouts usually form along the dark flat base of a line of developing cumulus clouds. This type of waterspout is generally not associated with thunderstorms. While tornadic waterspouts develop downward in a thunderstorm, a fair weather waterspout develops on the surface of the water and works its way upward. By the time the funnel is visible, a fair weather waterspout is near maturity. Fair weather waterspouts form in light wind conditions so they normally move very little.
Watch:https://www.youtube.com/watch?v=T6lgvU0Ldvc
Source:http://oceanservice.noaa.gov/facts/waterspout.html
Photo: ALANYA, TURKEY
Photo credit: MEHMET GOKYIGIT
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