Clearly visible night shining clouds - 27.6.2022 at 00.46 - 27.6.2022 at 02.25 Helsinki Observation number 107380

Visibility III / V

Pentti Arpalahti

At half past one, the night first looked like a version of the previous two nights. There is a hint in the second picture 0:32 but not enough for identification. In the northern triangle 0:46, the observation was visually certain. From there it then expanded. The first image I took 0:54 (illustration-type editing is not a scientific record corresponding to visual observation). Vito's North 2:14 is at the end of the show. I chose 1/8 for the extent, although 1/16 of the entire visible sky area would be more accurate, but the area was not very small.

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0 2

Additional information

Havainto
- Night shining clouds
Brightness of the noctilucent clouds
- Clearly visible night shining clouds
Cloud coverage in the sky
- Covered 1/8 of the sky

Noctilucent clouds
- 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.
- Waves
  
  Waves of noctilucent clouds are short, close groups of clouds.
  
  Wavy NLC by Jari Luomanen.
  
  NLC waves by Hannu Määttänen.

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Clearly visible night shining clouds - 27.6.2022 at 00.46 - 27.6.2022 at 02.25 Helsinki Observation number 107380