Long time after end of winter storms (5)
I believe the answer is:
rages
'storms' is the definition.
('rage' can be a synonym of 'storm')
'long time after end of winter' is the wordplay.
'long time' becomes 'ages' (I've seen this in another clue).
'after' means one lot of letters go next to another.
'end of' suggests the final letters.
The last letter of 'winter' is 'r'.
'ages' 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" .)