First suggestion of downfall, perhaps — and Prior goes wild (8)
I believe the answer is:
raindrop
'first suggestion of downfall' is the definition.
(first drop of rain)
'and prior goes wild' is the wordplay.
'goes wild' indicates an anagram.
'and'+'prior'='andprior'
'andprior' is an anagram of 'RAINDROP'.
'perhaps' is the link.
(Other definitions for raindrop that I've seen before include "Bit of a shower?" , "Rapid Ron (anag.)" , "Having a bit of a fall" , "Globule of precipitated moisture" , "Spot of precipitation" .)