Dust devils form in an upward motion from the ground to the sky. They are short-lived whirlwinds that are mainly harmless. Dust devils form when hot air at the surface begins to rise rapidly with much cooler air above it and higher up into the atmosphere. The hot air then stretches and causes a spinning motion much like a tornado. They are short-lived because cold air eventually gets pulled in and dissipates the dust devil. Dust devils become visible when they form over barren terrain, tarmac, and desert-like terrain. For dust devils to form, you usually need plenty of sunshine, little to no wind, and a very cool atmosphere above. Dust Devils will not have any funnel clouds and there will be no connection from the clouds to land.