when does a dust devil become a tornado
Dust devil They are comparable to tornadoes in that both are a weather phenomenon involving a vertically oriented rotating column of wind. Most tornadoes are associated with a larger parent circulation, the mesocyclone on the back of a supercell thunderstorm. Dust devils form as a swirling updraft under sunny conditions during fair weather, rarely coming close to the intensity of a tornado.
Economic nationalism While the coining of the term "
Dust Bowl This catastrophe intensified the economic impact of the Great Depression in the region.
Bill Knapp's By the end of 2002, the chain's last restaurant had closed.[7]