Answered
How does a waterspout start?
Scientists believe that tornadoes and waterspouts begin in severe thunderstorms called a supercells and are caused by a vertical wind sheer; a wind that changes direction as i…t gets higher. This change of direction and height causes the air to begin spinning which results in a tornado or waterspout. ---------------------------------------------------------------------------------- Any intense vortex (AKA funnel clouds) made a touch down on the water body will called waterspout. There are two types of waterspout: Non-Tornadic: This type of waterspout rarely rated higher than F1 in Fujita scales. It usually forms at the bottom of strata-cumulus or developing towering cumulus. It must form over a unstable environment, low vertical windshear area, but strong convergences near the boundary levels (lower level). This is the most common waterspout. This type of waterspout usually associate with vertical convection, rather than rotating updraft. Tornadic: As answered above in the previous answer, it's formed by rotating updraft. This kind of Waterspout could be potentially deadly. (MORE)