Meteorologist's warning dismissed by head of state (10)

I believe the answer is:

forecaster

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'meteorologist's' is the definition.
(I've seen this in another clue)

'warning dismissed by head of state' is the wordplay.
'warning' becomes 'fore' (shouted in golf).
'dismissed by head of state' becomes 'caster' (I am not sure about this - if you are sure you should believe this answer much more).
'fore'+'caster'='FORECASTER'

Can you help me to learn more?

(Other definitions for forecaster that I've seen before include "Prognosticator" , "Predicter (of, eg, weather)" , "One predicting the future" .)

I've seen this clue in The Independent.

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