Rent row causes a storm (7)
I believe the answer is:
tornado
'storm' is the definition.
(type of weather)
'rent row' is the wordplay.
'rent' becomes 'torn' (synonyms).
'row' becomes 'ado' (I am not sure about this - if you are sure you should believe this answer much more).
'torn'+'ado'='TORNADO'
'causes a' is the link.
Can you help me to learn more?
(Other definitions for tornado that I've seen before include "Destructive windstorm" , "Whirling windstorm" , "Funnelling wind" , "Typhoon" , "Terrible current" .)