Another key ingredient supporting the development of tornadoes is what is known as Wind Shear .
Wind shear is basically the change of wind speed or direction over a given distance.
For tornadoes to develop, significant speed and directional wind shear with height is very important. This indicates strong directional wind shear over the lower atmosphere, a vital component for tornado development. The vertical wind profile was also evident in the sounding from nearly the same time. Credits and Acknowledgments for WW2010.