What lawyer writes, accounting for storms in sheltered area (8)
I believe the answer is:
legalese
'what lawyer writes' is the definition.
'storms in sheltered area' is the wordplay.
'storms' becomes 'gales'.
'in' means one lot of letters goes inside another.
'sheltered area' becomes 'lee' (as in lee side, the side sheltered from wind).
'gales' put within 'lee' is 'LEGALESE'.
'accounting for' is the link.
(Other definitions for legalese that I've seen before include "barman's peculiar words" , "formal language" , "Bar talk" , "Special terms" , "Solicitor's jargon" .)