Body Mass Index (BMI). BMI stands for Body Mass Index. It is a measure of body composition. BMI is calculated by taking a person's weight and dividing by their height squared. For instance, if your height is 1.82 meters, the divisor of the calculation will be (1.82 * 1.82) = 3.3124.
Dissipating Stage: When the downdrafts encompass the storm, the updrafts are shut off and the storm begins to die. The intensity of the rain decreases. Prior to the development of a thunderstorm, the air near the surface is often warm and moist. With the downdrafts come cool air and the temperature at the surface drops.
The short answer is: thunderstorms. You're already aware that there are severe up- and downdrafts associated with cumulonimbus clouds. It's this air movement that allows hail to form. The warmer water droplets from below are swept above the freezing level by the updrafts.