ELI5: Explain Like I'm 5

Goff–Gratch equation

The Goff-Gratch equation is a formula that helps scientists figure out how much water vapor will turn into rain in a certain area. Scientists use the equation to predict how much rain will fall in an area. The equation takes into account things like air temperature and pressure, and the amount of water vapor in the air. The equation helps scientists figure out if a storm will be big or small and how long it might last.