the more likely explanation seems to me that not all panels were hit by a sufficiently large hailstone to cause an initial break. once the structural integrity of a panel is broken, smaller stones can damage it further that wouldn't have otherwise..
Probably not just the size of the hail that hit it, but where the big pieces hit it. At a first guess they're using tempered glass, and that's a lot more likely to fracture if you hit it near the corners than the centre.
gpm|2 years ago