Dim night shining clouds - 14.7.2021 at 01.45 - 14.7.2021 at 01.50 Sysmä Observation number 99546

Visibility II / V

Arja-Sisko Airila, Ursa (Etelä-Suomi)

In the northeastern sky, a very small area showed waves of illuminating night clouds. There was no proper visibility in other directions due to edge obstructions. The sky is clear, calm, temperatures of +20 degrees.

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Additional information

Havainto
- Night shining clouds
Cloud coverage in the sky
- Very small area
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.

Brightness of the noctilucent clouds
- Dim night shining clouds

Technical information

Canon PowerShot

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Dim night shining clouds - 14.7.2021 at 01.45 - 14.7.2021 at 01.50 Sysmä Observation number 99546