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Ursa Astronomical Association

Other special clouds - 30.5.2022 at 12.00 Kurikka Observation number 107016

Visibility III / V

Marko Myllyniemi, Lakeuden Ursa

Thunderstorms were forecast, so I watched the cloud cover during the day. At noon I noticed pileus stacks above the peaks of the rising cloud in the northwest, with several reeds above the top on the left in particular. Great summer opening!

Additional information
  • Havainto
    • Other special clouds
  • Cloud coverage in the sky
    • Very small area
  • Other special clouds
    • Pileus stack info

      Pileus stack

      The pileus cloud typically occurs at the top of a thundercloud, forming a hat-like leaf above the main cloud. If at least three reeds are visible, the object can be considered a pileus stack.

      In situations where the top of the main cloud passes through the reeds, it is more like a velum cloud (veil cloud).


      Image by Jari Ylioja

Technical information

Canon EOS 70D, Sigma DC 18-250mm OS HSM

Comments: 1 pcs
Tero Sipinen - 20.6.2022 at 12.07 Report this

Hieno lierihattu kumpupilvellä.

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