Meteorological measure is absolute farce in a storm (8,5)
I believe the answer is:
beaufort scale
'meteorological measure' is the definition.
'Beaufort scale' can be an answer for 'measure' (Beaufort scale is an example). I'm unsure of the 'meteorological' bit.
'absolute farce in a storm' is the wordplay.
'in a storm' is an anagram indicator.
'absolute'+'farce'='absolutefarce'
'absolutefarce' is an anagram of 'BEAUFORT SCALE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for beaufort scale that I've seen before include "Measure of wind speed" , "Method of rating winds" , "Wind speed describer" , "On which zero is 'calm' and twelve is 'hurricane'" .)