Eye-catching night shining clouds - 21.7.2021 at 00.20 - 21.7.2021 at 02.10 Tampere Observation number 99846

• Havainto
• • Night shining clouds
• 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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