[4] The more common non-tornadic waterspout forms in calm weather. When the sun heats the surface of the water, the warm air above it becomes less dense and begins to rise with moisture.

The most common kind of waterspout is non-tornadic, dissipates quickly and is usually only powerful enough to register as an F0. However, there is a much more serious type of waterspout that ...

Most waterspouts are non-tornadic, with winds not exceeding 67mph, yet some can be as powerful as tornadoes and have the potential to cause damage, even posing a threat to shipping. For the latest ...