A falling raindrop is never shaped like a raindrop. The small ones are round, pulled tight by surface tension. Bigger ones fall fast enough that the air pushes up on their undersides and flattens them, so a heavy drop comes down looking more like a hamburger bun than a tear. Past about four and a half millimetres the air wins: the underside caves in, the drop balloons into a thin bag, and it bursts into smaller drops, which is why rain comes in many sizes but never in large ones. The pointed shape in the forecast icons is closer to a drop hanging from a tap, just before it lets go.