Hailstones

Last night I was getting ready for bed shortly after the ghost hour when I heard a horrifying noise. I was worried about the roof above my abode. It didn't calm me down to turn off the light and see the size of hailstones bombarding the balcony as if  fired by scores of cannons. They were terrible moments before I made my slow way up the stairs to see the situation. There was little I could do to protect the window in a diagonal wall. Had it given in, I'd have had a flood in the flat...