Triple Point of Water: Hail Rain Explained

[pivoxa15]

When we have hail rain, that is water and little solids in the form of ice crystals falling from the sky, is that evidence of the triple point of water being reached in the atomsphere hence H20 gas, liquid and solid coexist at the same time with the heavier two, liquid and solid falling down from the sky due to domination of gravititational foces.

 

[jasc15]

For snow to fall, each part of the atmosphere that it falls through must be below freezing, this way the crystals (snowflakes) don't melt at any point on their way down. I am pretty sure that hail is when liquid water falls through a section of atmpsphere that is below the freezing point where it becomes ice chunks rather than ice crystals. Your triple point explanation seems to make sense too.