Clearly visible night shining clouds - 20.7.2012 at 01.45 Espoo Observation number 6396

Visibility III / V

Timo Kuhmonen, Ursa (Etelä-Suomi)

height in the sky (north), about 30 .... 40 degrees. Occurred between the Northeast - Northwest. A reasonably fine play, the clouds came later / partly unexpectedly into the sky. Observations at their site, ended at 2 p.m.

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3 4

Additional information

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

Brightness of the noctilucent clouds
- Clearly visible night shining clouds

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Clearly visible night shining clouds - 20.7.2012 at 01.45 Espoo Observation number 6396