Ran out through the flap into the storm (7)
I believe the answer is:
tornado
'the storm' is the definition.
(type of weather)
'ran out through the flap' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'through' indicates putting letters inside (inserted letters go through the word).
'the flap' becomes 'todo' (both can mean a fuss).
'ran' is an anagram of 'rna'.
'rna' going within 'todo' is 'TORNADO'.
'into' acts as a link.
(Other definitions for tornado that I've seen before include "Windy hazard" , "Donator of fierce wind" , "Destructive wind vortex" , "This is quite a blow" , "Severe wind" .)