Eye-catching night shining clouds - 4.8.2021 at 00.01 - 4.8.2021 at 03.50 Mäntyharju Observation number 100190

Visibility V / V

Jukka Kytömäki

This time, the brightest of the summer came, which only improved over the morning and eventually rose above the zenith. Images now in reverse order. More than a hundred pictures and a few changes of place. The ensemble was complemented by the presence of the lunar sickle.

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Additional information

Havainto
- Night shining clouds
Cloud coverage in the sky
- Covered 5/8 of the sky
Noctilucent clouds
- Unusual forms
  
  Relatively rarely, there are special shapes in the night shining cloud displays that do not belong to the shapes listed above. Such may be, for example, thick lumpy formations that appear as some kind of patches. They may also be associated with an unusual color tone.
- 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
- Eye-catching night shining clouds

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Eye-catching night shining clouds - 4.8.2021 at 00.01 - 4.8.2021 at 03.50 Mäntyharju Observation number 100190