Right time for storm (4)
I believe the answer is:
rage
'for storm' is the definition.
(synonyms)
'right time' is the wordplay.
'right' becomes 'r' (abbreviation).
'time' becomes 'age' (an age is a period of time).
'r'+'age'='RAGE'
(Other definitions for rage that I've seen before include "Speak with great anger" , "Fury - fashion" , "Fashionable" , "Gear up in violent temper" , "Wrath" .)