Ragged song and dance causes a storm (7)
I believe the answer is:
tornado
'storm' is the definition.
(type of weather)
'ragged song and dance' is the wordplay.
'ragged' becomes 'torn' (I've seen this in another clue).
'song and dance' becomes 'ado' (I've seen this before).
'torn'+'ado'='TORNADO'
'causes a' is the link.
(Other definitions for tornado that I've seen before include "Violent wind vortex" , "Violent wind storm" , "Violent swirling wind" , "Whirling windstorm" , "Violent whirlwind over land" .)