Message #227295

[Avalon]

Whirlwinds

A whirlwind is a weather phenomenon in which a vortex of wind (a vertically oriented rotating column of air) forms due to instabilities and turbulence created by heating and flow (current) gradients. Whirlwinds occur all over the world and in any season.

http://en.wikipedia.org/wiki/Whirlwi...ic_phenomenon)


Landspouts: http://en.wikipedia.org/wiki/Landspout


Waterspouts: http://en.wikipedia.org/wiki/Waterspout


Dust Devils: http://en.wikipedia.org/wiki/Dust_devil