Definition
Irregular, gusty air movement occurring close to the ground, typically below 2,000 feet AGL, caused by surface friction, terrain features, buildings, thermal activity, or wind shear near the surface. It is a hazard during takeoff, approach, and landing because the aircraft has limited altitude and airspeed margin to recover from sudden disturbances.
Plain English
Bumpy, unsettled air found near the ground that can push an aircraft around during takeoff and landing, when there is little room to recover.
Context Anchor
Pilots most often notice low-level wind turbulence near the runway, over uneven terrain, near trees or buildings, and in gusty weather close to the ground.
Derivation
Turbulence comes from an old word meaning disorder or commotion. That helps here because turbulent air is not flowing smoothly; it is disturbed and changing quickly.
Why Pilots Care
It can produce sudden airspeed losses or altitude changes during the most critical phases of flight, requiring prompt corrections to maintain control.
Analogy
Similar to how wind hitting rocks or buildings on a lake creates swirling ripples that rock a small boat.
Grounding Statement
Picture wind flowing over buildings or trees and breaking into uneven swirls just where an airplane is taking off or landing.
Intuition Check
Low-level does not mean mild or unimportant. It means close to the ground, where turbulence can matter more because the pilot has less room to recover.
Example Sentence 1
The instructor briefed the student on low-level wind turbulence before their crosswind landing practice on the gusty afternoon.
Example Sentence 2
Low-level wind turbulence increased as the aircraft descended over the tree line during the landing sequence.