Quick Facts
- Type
- Weather Hazard
- Definition
- A sudden change in wind speed or direction over a short distance
- Used By
- Pilots, ATC
Definition#
Wind shear is a rapid change in wind speed and/or direction over a short distance, either vertically or horizontally. It can occur at any altitude but is most hazardous near the ground during takeoff and approach.
Why It Matters Operationally#
Low-level wind shear can cause sudden changes in airspeed and lift, leading to altitude deviations or loss of control. Microburst-related wind shear is particularly dangerous and has been a factor in multiple aircraft accidents.
Related Guides#
- What Is Turbulence?
- Aviation Weather Explained — The Complete Operational Guide
- Crosswind Explained
- Air Masses & Fronts in Aviation
- Density Altitude Explained
- Clear Air Turbulence Explained