Read here. Climate scientists who promulgate the IPCC-AGW hysteria predicted that hailstorms would become more frequent and intense, including the phenomenon of larger hailstones. The latest peer-reviewed research determines this prediction without any significant merit.
"Climate alarmists contend that various types of extreme weather events become both more frequent and more extreme as the world warms; and the authors write, in this regard, that "hail is one of the most extreme weather phenomena, causing great loss to agriculture every year in China.....Xie and Zhang first noted that Xie et al. (2008) had already found there was a "significant decreasing trend of hail frequency in most of China from the early 1980s based on 46 years of data during 1960-2005." So for this vast country, they began with the knowledge that one of two types of potential hail extremeness (hailstorm frequency) had not lived up to climate-alarmist hype. Therefore, the two researchers focused on the other type of extremeness (hailstone size), noting that "changes in hail size are also an important aspect of hail climatology,".....Xie and Zhang report that their work revealed an uptrend in maximum hail diameter in Hebei, a flat trend in XUAR, and a slight downtrend in both Guizhou and IMAR; but they add that "none of the trends is statistically significant.".....In fact, the data suggest there was a slight decline in the frequency of such storms, along with a hint of a possible decrease in maximum hail diameter..." [Xie, B. and Zhang, Q. 2010]
Additional severe-weather postings. More peer-reviewed postings. Other failed-prediction postings.