Anticipated the warning and was turning (7)
I believe the answer is:
foresaw
'anticipated' is the definition.
('foresee' can be a synonym of 'anticipate')
'warning and was turning' is the wordplay.
'warning' becomes 'fore' (used to warn of airborne balls on a golf course).
'and' is a charade indicator (letters next to each other).
'turning' says the letters should be written backwards.
'was' written backwards gives 'saw'.
'fore'+'saw'='FORESAW'
'the' is the link.
(Other definitions for foresaw that I've seen before include "Expected" , "Anticipated" , "Predicted" .)