Is it too darn windy? (7)
I believe the answer is:
tornado
'is it' is the definition.
I can't judge whether this definition defines the answer.
'too darn windy?' is the wordplay.
'windy?' indicates anagramming the letters (windy suggests disruption).
'too'+'darn'='toodarn'
'toodarn' with letters rearranged gives 'TORNADO'.
(Other definitions for tornado that I've seen before include "A violent and destructive whirlwind" , "Violent twister" , "Strong wind" , "Typhoon" , "Whirling storm" .)