What is Hail?
Hail is a type of rain which are balls of ice called hail stones fall from the sky,But for the hail formation following conditions are necessary
Firstly There must be a thunderstorm cloud Secondly The upper portion of a cloud should be below freezing temperature Thirdly The cloud should have a great vertical height Fourthly It should have high water content Lastly There must be strong up rising winds called updrafts
Now according to a recent study hail begins to form when updrafts lift upward the water droplets present at the bottom of a cloud ,now as they ascend the freezing temperature causes the droplets to turn into tiny hail stones ,then as the updrafts push these hail stones even higher.More droplets freeze onto them creating larger hail stones
Eventually when these hail stone becomes too heavy for the updraft to hold they fall causing hail.