They look like giant flying saucers on top of mountains, but clouds
are stationary lens-shaped. The lenticular clouds formed aligning
perpendicularly to the direction of the wind at height. This occurs when
stable moist air passes over the mountain or mountain range, creating a
series of standing waves. Then if the temperature at the top of the
waves fall near or below the dew point temperature, the air humidity
condenses and thus produce the lenticular clouds, which disappear when
the air moves back into the wave. It is not difficult to confuse
somebody with … UFO and put legs! But in a second time will be left to
enjoy the stunning scenery in the sky!
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