The plane hit quite a bit of 'turbulence' during our flight.
A period of 'turbulence' preceded the riots.
political/economic/emotional 'turbulence'
(..) they must cross the Himalayas. By late morning ferocious winds are roaring past the peaks. The cranes must gain height to avoid the building storm. They've hit serious turbulence. They must turn back or risk death. A new day and a new opportunity. The flock stay in close contact (..)2006 TvShow: Planet Earth Title: Mountains Season: 1 Episode 2