Blow is from turbulent air (10)
I believe the answer is:
misfortune
'blow' is the definition.
(thesaurus)
'is from turbulent air' is the wordplay.
'turbulent' indicates anagramming the letters.
'air' becomes 'tune' ('tune' can be a synonym of 'air'**).
'is'+'from'='isfrom'
'isfrom' with letters rearranged gives 'misfor'.
'misfor'+'tune'='MISFORTUNE'
(Other definitions for misfortune that I've seen before include "DISASTER]" , "Adversity - bad luck" .)