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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

Pilvikaari maanpinnalta - 17.1.2021 at 15.07 - 17.1.2021 at 15.25 Espoo Observation number 95616

Visibility III / V


The arc weekend seems to have been this.

The first image with the camera from the right end of the arc fifteen minutes after I had spotted the left end of the arc from which the cell phone image.

There were some shades of red and yellow at both ends. They weren't completely colorless, but they didn't even show the colors of the rainbow. Freeze just over 8 degrees at the time of shooting. Cloud arc snippets apparently?


Additional information
  • Lightsource of the phenomenon
    • Sunlight
  • How did the phenomenon move?
    • Stayed put
  • Rare atmospheric phenomena
    • Cloudbow visible from the ground info

      Pilvikaari on harvinainen, pilviin piirtyvä väreiltään hailakka sateenkaaren sukulainen joka näkyy Aurinkoa vastapäätä. Pilvikaarta paras etsiä kun Aurinko on matalalla. Tällöin kaari on helpoiten nähtävissä sen noustessa verraten korkealle taivaalle. 

      Pilvikaarta ei tule sekoittaa sumukaareen joka muutoin on samanlainen ilmiö, mutta näkyy sumussa tai sumupilvessä.

      Pilvikaari ei näy sateessa eikä sumussa, vaan se piirtyy pilven muotoihin. Kuva Mikko Peussa.

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