Yesterday one of the usual clowns on the thread was trying to claim that there has been an increase in the amount of hail in New Mexico due to global warming – citing this graph.

www.srh.noaa.gov/ssd/techmemo/sr207.htm
He forgot to mention this part :
the significant increase since 1987 is likely due to an increase in population and land use, and an increase in public awareness of severe weather through more aggressive spotter training at the WFO in Albuquerque
But ignoring the meaningless data above, let’s have a look at the theory. Convective hail is formed in violent thunderstorms which have very cold air in the mid to upper troposphere.
Global warming theory expects warming in mid-troposphere, so global warming should reduce the frequency of hail.