Increase In Hail Storms

“There are various projections for future decades; one possibility is that if the general warming trend persists, incidence of all damaging hailstorms may decrease but that of the severest ‘supercell’ storms may increase (which are those that cause damage to Motor Vehicles) however trends will take several decades to confirm.  My best guess on the next decade would be stability –i.e. a frequency within the range of thelast two or three”
Jonathan Webb
Tornado and Storm Research Organisation (TORRO) April 2017

% of Destructive Hailstorms by month (204 years)