The necessary conditions for hail formation include strong upward vertical motion and:
A) raindrops larger than 5 mm.
B) large numbers of particulates.
C) large numbers of supercooled droplets.
D) warm temperatures at high levels in the cloud.

Question

Quizplus · Accepted Answer

Hailstones form from the accumulation of layers of ice on a particle, such as a supercooled water droplet. Without supercooled droplets in the cloud, hailstones cannot form. The other choices are not necessary conditions for hail formation.

The Necessary Conditions for Hail Formation Include Strong Upward Vertical