Storm passing over northern mountains (5)
I believe the answer is:
range
'mountains' is the definition.
(range of mountains)
'storm passing over northern' is the wordplay.
I cannot quite understand how this works, but
'northern' could be 'n' (abbreviation e.g. N. Ireland) and 'n' is located in the answer.
'storm' could be 'rage' (synonyms) and 'rage' is found within the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for range that I've seen before include "Extent - shooting area" , "Wander freely" , "Variety; scope" , "Cooking stove or place for target practice" , "Place to practise driving" .)