Lenticular (lens-shaped) clouds - a term referring to a stunningly beautiful and a rare natural phenomenon. A characteristic feature of these clouds is that they do not move, no matter how strong the wind.
In them there is continuous process - air rises above the level of condensation, water vapor condensed on the downward path of the water droplets evaporate, and a cloud comes to an end. That is why the lenticular clouds and do not change their position in space, and are in the sky, like glued.
The emergence of lenticular clouds associated with the approach of the front or rear with an energetic transfer of air from remote areas.
Generally cloud "UFO" hovering in the lee of mountain ranges and ridges of the individual peaks at a height of two to six kilometers.