Long time after end of winter storms (5)
I believe the answer is:
rages
'storms' is the definition.
(I know this)
'long time after end of winter' is the wordplay.
'long time' becomes 'ages' (I've seen this before).
'after' is a charade indicator (letters next to each other).
'end of' says to take the final letters.
The final letter of 'winter' is 'r'.
'ages' put after 'r' is 'RAGES'.
(Other definitions for rages that I've seen before include "becomes furious" , "Shows anger" , "speaks as Hitler!" , "States of extreme anger" , "Fits of temper" .)