Football, hailstone, tennis ball July 5, 2013 2592 × 1936 Heatwave? washout? Or just another changeable British summer? It is thought the size of the 1808 hailstone may, along with a storm in 1697, be the national record for hailstone size – being 20mm greater in diameter than those measured in a Horsham, Surrey, storm in 1958 Share this:TwitterFacebookEmailLinkedInPrintLike this:Like Loading...