Rocket-related clouds - 10.10.2022 at 05.50 - 10.10.2022 at 05.52 Kylmäkoski Observation number 109900

Visibility I / V

Kertu Pöld

Driving to work in the morning, I saw a special light phenomenon that I have never seen in the sky. There is no smell what it could have been, because the moon was on the other side of the sky. The phenomenon dissipated quite quickly in about 2 minutes

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Additional information

Havainto
- Rocket-related clouds
Rocket launch
- Rocket contrails
  
  The rocket contrails are colorful clouds that appear when the sun is below the horizon. The contrails can float so high in the atmosphere that the sun shines on them even if it is already completely dark on the ground. They stay visible noticeable quite long after the launch.
  
  The colors are created by the scattering of sunlight in the small ice crystals. In Finland, rocket phenomena from two different locations have mainly been observed. One of them is the missile launches from the submarines from the White Sea and the Arctic Ocean. They use solid fuel that creates colorful clouds.
  
  Another source of rocket phenomena is the Plesetsk Cosmodrome Area in Russia. There are a few launches from there every year. These fires usually use liquid fuels, making the clouds less spectacular.
  
  The visibility of the rocket launch is affected by the time at which the launch is made and where the winds blow. The best of all is around 3-5 o'clock Finnish time, when the cloud has time to spread out a bit and shine in the morning sun coming from the east when it is still dark or dark in Finland.
  
  During the first decade of the 2000s, rocket phenomena have been observed about twice per year in Finland. Since then, however, it has been quieter.
  
  Rocket contrails from Oulunsalo, Photo by Jarmo Moilanen.

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Rocket-related clouds - 10.10.2022 at 05.50 - 10.10.2022 at 05.52 Kylmäkoski Observation number 109900