Clearly visible night shining clouds - 28.7.2021 at 00.35 - 28.7.2021 at 00.50 Sysmä Observation number 100010

Visibility III / V

Arja-Sisko Airila, Ursa (Etelä-Suomi)

Clearly visible illuminating night clouds in the northern sky from northwest to northeast, long belts and waves. The night clouds are so low that they are largely behind the forest at my observation site. Weather clear, calm, temperatures +19. There were so many mosquitoes in the bouquet that I had to come away.

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Additional information

Havainto
- Night shining clouds
Cloud coverage in the sky
- Covered 1/4 of the sky

Noctilucent clouds
- Waves
  
  Waves of noctilucent clouds are short, close groups of clouds.
  
  Wavy NLC by Jari Luomanen.
  
  NLC waves by Hannu Määttänen.
- Band
  
  Bands of noctilucent clouds are long, stripe like cloudformation.
  
  A single, very bright NLC band. Photo by Mikko Peussa.
  
  On the upper left corner, rising bands are clear on the image. Whereas waves of NLC cover the bottom right side of the image. Photo by Juha Tonttila.
- Veil
  
  The night cloud vail is a vague thin night shining cloud with no clear structure.
  
  Noctilucent cloud veil with one strong belt formation. Image by Veikko Mäkelä.

Technical information

Canon PowerShot

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Clearly visible night shining clouds - 28.7.2021 at 00.35 - 28.7.2021 at 00.50 Sysmä Observation number 100010