Waterspout

A waterspout is an intense columnar vortex (usually appearing as a funnel-shaped cloud) that occurs over a body of water and is connected to a cumuliform cloud. In the common form, it is a nonsupercell tornado over water.
Waterspouts, not associated with a rotating updraft of a supercell thunderstorm, are generally called "nontornadic waterspouts," or "fair-weather waterspouts," while those associated with mesocyclones are called "tornadic waterspouts". Tornadic waterspouts are generally more intense than nonsupercell waterspouts, and really just resemble a tornado on water.

Fair weather waterspouts occur in coastal waters and are associated with usually weak, developing convective towers. They usually are F0, comprised of winds of less than 30 m/s. These are arguably the most common waterspouts in tropical climates, with upwards of 400 per year observed in the Florida Keys.They generally develop in warm weather with light surface winds, and form from the bottom-up.Fair-weather waterspouts are similar to landspouts.

Though the majority occur in the tropics, they can seasonally appear in temperate areas throughout the world, and are common across the western coast of Europe as well as the British Isles and several areas of the Mediterranean and Baltic Sea. They are not restricted to saltwater; many have been reported on lakes and rivers including all five Great Lakes .They are more frequent within 100 kilometers (62 mi) from the coast than out in the open sea. Waterspouts are common along the southeast U.S. coast, especially off southern Florida and the Keys and can happen over seas, bays, and lakes worldwide. Approximately 160 waterspouts are currently reported per year across Europe, with the Netherlands reporting the most at 60, followed by Spain and Italy at 25, and the United Kingdom at 15.