Final answer:
Thunderstorm activity near an airport can cause wind-shear turbulence on the landing approach.
Step-by-step explanation:
When there is thunderstorm activity in the vicinity of an airport, one hazardous atmospheric phenomenon that might be expected on the landing approach is wind-shear turbulence. Wind-shear turbulence occurs when there is a sudden change in wind speed or direction over a short distance, which can be caused by thunderstorms. These rapid changes in wind can be dangerous for aircraft as it can affect the stability and control of the aircraft during landing.