20th February 2005 Giant hail smashed my windscreen perhaps up to 4 inch in diameter! Negative tilt trough with destabilisation at the time of the event - this was the second of two major supercells although I suspect this one was more potent! I measured 8.3cm hail and I did not look for too long as I was getting too wet. The most interesting thing apart from the hail was whilst being hammered by base ball sized hail, I passed under the overhand for about 30 or so seconds, no hail fell and then bang! The giant stuff!