Here is a very good reason why glass house is so dangerous, I’ve witness a hail storm in Malaysia before, and it is a mini version of those in Europe and United States, average size of these hailstones in Malaysia are about one centimeter in diameter. Just imagine those baseballs size a hailstone raining down from the sky and your brand spanking new Mercedes-Benz S-Class is parked at the lawn.
Hail forms in strong thunderstorm clouds, particularly those with intense updrafts, high liquid water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing (< 32 °F (0 °C)). The growth rate is maximized at about -13 °C (9 °F), and becomes vanishingly small much below -30 °C (-22 °F) as supercooled water droplets become rare.
