Effects of landfall location and the approach angle of a cyclone encountering a mesoscale mountain range

In summary, the deflection of a cyclone encountering a mountain range is largely controlled by vorticity advection and stretching, depending upon the landfall location and approach angle of the cyclone. Generally speaking, the local vorticity generation is dominated more by vorticity advection upstream of the mountain range, and by vorticity stretching downstream and near the mountain range. Far downstream of the mountain, the local vorticity generation is again dominated by the vorticity advection, as it steers the vortex back to its original direction of movement.