The largest hail ever reported, IIRC, was on the "lee" side of the Himalayas, and was large enough to actually kill a couple of elephants. I think it was described s being close to basketball or soccer ball size.

Hail tends to be larger and more prevalent on the lee side of mountain ranges, a phenomenon I saw many times while living in Colorado. One storm dumped fist sized hail that actually built up and pushed a house off its foundations somewhere between Denver and Boulder. Don't remember whether it was Louisville or Broomfield, but I remember the pictures in the RM News.

TEd