Notice that I have put it this way because the air,
we have mentioned many times veering and backing for speed,
but air also has a tendency to rotate high up,
because the surface wind and the wind high up do not have the same direction.
When air enters the surface, it is wet and warm,
enters as a storm and has a tendency to rotate on itself,
it is a like a tape that is rolled onto itself.
When there is precipitation, precipitation is nothing more than something that goes down.
Something that descends into the cloud, therefore within
the cloud we will also find a zone of descent of the air.
And this descent is also a like a tape
rotating on itself.
Notice that the air enters, turns, rises and there is a moment when it descends,
It turns again and goes back out at a ground level.
So you notice that the storms are going to have an inflow and an outflow,
A zone that enters and an area that leaves.
Depending on how these two "belts" rotate, it may happen that the rotating part
of the wave that ascends and the one that descends intertwine with each other.
This could generate, within the storm,
a cycle that unites the descent and the ascent.
If this occurs, this would be a kind of rotor inside
that can generate hailstones because
imagine a rising particle, on a certain level in this storm
hits a zero degrees Celsius.
From there it begins to freeze, freezes, falls with the outflow,
but for some reason, because they crossover, it rises again.
This particle is going to refreeze more, it will increase its volume of ice
and it will come back down, and it can be circling until the
the one that rises can not raise it again and it will go down.
This would be the stone cycle,
when these two belts are intertwined between themselves.
Regarding the wind, notice that there is a part,
typically in the outflow area, where there is a descent
and here is where the precipitation is going to be.
Perhaps one of the clouds that we who sail have to look for the most
would be so called shelf-cloud.