🧊 Hailstone Growth Lab: Updraft Accretion, Wet-Growth Limit, Melting and a Layered Cutaway

Release a hailstone embryo into a supercell updraft and follow it as it climbs, accretes supercooled water, switches between dry and wet growth, and melts on the way down. A live cutaway paints the stone's layers, and sweeps and numerical checks test updraft limits and the Schumann-Ludlam criterion.