Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Eye-catching night shining clouds - 21.7.2021 at 00.05 - 21.7.2021 at 03.15 Sysmä Observation number 99779

Visibility V / V

Arja-Sisko Airila, Ursa (Etelä-Suomi)

Johan had impressive looking night clouds filling almost the entire sky. Immediately after midnight, a fishbone-like night cloud pattern was visible throughout the southern sky. Long belts were visible from north to south in the middle sky. After one o'clock the night clouds began to fade from the southern sky, but brightened throughout the northern sky. Long belts, herringbone pattern, swirls, gauze and strange patterns. I followed the night cloud display well into the morning. After three o'clock in the morning, as the morning began to dawn, the southern sky was again full of night clouds, long belts across, and a herringbone pattern. Then clouds began to rise into the western sky, covering the Nightingales. The sky was clear, night calm, temperatures +13.

Images 1st West 00:38, 2nd West 00:36, 3rd North 00:37, 4th North 00:40, 5th North 00:41, 6th North 01:42, 7th North 01:43, 8th northwest 1:45.

More similar observations
Additional information
  • Havainto
    • Night shining clouds
  • Cloud coverage in the sky
    • Covered 7/8 of the sky
  • Noctilucent clouds
    • Unusual forms info

      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.

    • Swirl info

      Swirls are curved night shining cloud forms. For example, a single night cloud belt or group of waves may be curved on a clear bend.

      The arrow indicates a slight vortex in the night cloud belt. Photo by Joni Tahkoniemi.

      Strong swirls in image taken by Veikko Mäkelä.

    • Waves info

      Waves of noctilucent clouds are short, close groups of clouds.

      Wavy NLC by Jari Luomanen.


      NLC waves by Hannu Määttänen.

    • Band info

      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 info

      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
Technical information

Canon PowerShot

Comments: 1 pcs
Sirkku Turunen - 21.7.2021 at 04.26 Report this

Vau,mitkä kuvat!

Itsekin näin taivaalla koko komeuden,mutta epäilin näkemääni yöpilviksi..

Todella kaunista keskikesän taivasta!!

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.



characters left

By sending in this comment I confirm, that I've read and understood the the observation system's privacy policy.