Prophecy about to be found in wood (8)
I believe the answer is:
forecast
'prophecy' is the definition.
(I've seen this before)
'about to be found in wood' is the wordplay.
'about to' becomes 'ca' (I've seen this in other clues).
'be found in' is an insertion indicator.
'wood' becomes 'forest' ('forest' can be a synonym of 'wood').
'ca' going within 'forest' is 'FORECAST'.
(Other definitions for forecast that I've seen before include "Predict as with weather" , "Fear Scot in prediction" , "Prophecy" , "Meteorological surmise perhaps" , "Divine" .)