Clearly visible night shining clouds - 21.7.2020 at 00.30 - 21.7.2020 at 02.00 Pori Observation number 92228

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

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