It's November, the month I was born.
The sky is gray and from the clouds descend slowly and thinly
the drizzle, the hills surrounding my city are shrouded in mist,
and the earth smells of damp and fallen leaves.
The days get shorter and shorter, the light and temperatures drop and I fall back on myself.
It has always been like this, November for me is a month of sadness and introversion.
So many bad and painful things have happened in the last four years, and sometimes I feel
like a Jonah on the contrary: "how many things can happen to you so that you can regain faith in a God
in which you can no longer believe, but without which your life seems to have no meaning anymore."
This morning I saw a Kelvin-Helmholtz cloud, I know this kind of cloud, I'm supposed to be a weather forecaster, although for most of my time I write computer programs, but I have never seen one.
The Kelvin-Helmomholtz clouds, named after the two scientists who first studied the phenomenon, are an extremely rare event, in which are producted floating wave-shaped clouds. They occur when there is a strong vertical variation in the speed of two air layers close to each other (vertical shear) , and if the upper layer has a higher speed than the lower one it can capture portions that swirl in the form of a wave. These types of clouds do not cause rainfall and unlike the other types of cloud they do not have a name of Latin origin that distinguishes them.