We can use the new @zd1awrence products to visualize in full. The lower-end of the vortex is more inclined to amplify and move slower being part of the vortex instead of between centers...i.e. where the jet is and where speed would tend to move it along... pic.twitter.com/lPl8AQbUKF

— Anthony Masiello (@antmasiello) December 5, 2018