Meteorology
Wind shear
At a glance
Meaning of Wind shear
A change in wind speed or direction over a short distance.
More about Wind shear
Wind shear can change an aircraft's airspeed and flight path, particularly during low-altitude phases where there is limited recovery space.
It can occur in several weather situations. Crews use weather information, installed warnings and aircraft-specific procedures; it should not be treated simply as ordinary steady crosswind.