Ruslan: “My first capture of NLC this season! Captured at 2:14 local time.
I also made some weather observations: usually people say that NLC appear when there’s absolutely no wind on the ground—this night it was pretty windy, about 8-10 m/s.”
Polar Mesospheric Clouds (also known as noctilucent clouds) are transient, upper atmospheric phenomena observed usually in the summer months at high latitudes (greater than 50 degrees) of both the Northern and Southern Hemispheres. They are bright and cloud-like in appearance while in deep twilight. They are illuminated by sunlight when the lower layers of the atmosphere are in the darkness of the Earth’s shadow.
“At 80km above the earth, these are the highest clouds in the atmosphere and are composed of ice crystals. They can be seen in the late spring and summer only when the sun is below the horizon and at latitudes of 50-65 degrees north and south of the equator.” (Source: Wikipedia)