One crying wolf as a mistral blows up? (8)
I believe the answer is:
alarmist
'one crying wolf' is the definition.
(I've seen this before)
'a mistral blows up?' is the wordplay.
'blows up?' indicates an anagram (I've seen 'blow up' mean this).
'mistral' with letters rearranged gives 'larmist'.
'a'+'larmist'='ALARMIST'
'as' is the link.
(Other definitions for alarmist that I've seen before include "One may cause panic" , "(Person) creating unnecessary panic" , "One who cries wolf" , "Creating needless worry" , "Worrying individual" .)