What speed do the wake vortices of larger aircraft tend to move laterally over the ground?

Wake vortices are a significant factor in aviation safety, particularly in the wake of larger aircraft during takeoff and landing. These vortices are generated by the wings of an aircraft and can create hazardous conditions for smaller aircraft following behind.

The speed at which the wake vortices of larger aircraft tend to move laterally over the ground is generally low, reflecting the slow drift of these vortices caused by factors such as wind and atmospheric conditions. A speed range of 2-3 knots is representative of typical lateral movement.

This specific range is relevant because it demonstrates that while the vortices can be dangerous, their drift is relatively slow, allowing for some predictability in their behavior. Understanding this helps pilots and air traffic controllers manage spacing and avoid potential encounters with these strong, turbulent air currents, especially when operating near larger aircraft during takeoff and landing phases.