Weather expert Dan Corbett explains that the two main ingredients for tornadoes are instability and wind shear. Instability means being able to lift
Weather expert Dan Corbett explains that the two main ingredients for tornadoes are instability and wind shear. Instability means being able to lift clouds at the surface to great heights, while wind shear is a change in wind direction with height that can cause twisting in the clouds. Recent mini-tornadoes in New Zealand were caused by active weather, and a twist in the winds brought strong, damaging winds with the tornadoes as they moved through. Strong wind squalls, in the right conditions, twist and form eddies, like a whirlpool effect.
