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

Ursa Astronomical Association

Image of an exceptional thunder cloud - 25.8.2020 at 13.21 - 25.8.2020 at 14.24 Laitila Observation number 93121

Visibility V / V

Pirjo Koski, Riku Poskiparta, Porin Karhunvartijat

I followed the radar rain area, which blushed at a good pace.

We decided to go with the man to see the situation from the field. A single glance assured that as soon as it rained, the foot of the rain grew in my eyes.

We drove to the cradle when the rumble started. It was a low growl, but nothing was visible from the rain. A few clouds of lightning flashed and the rainy area reached the barn.

The rain hit the tin roof with force and the bunker-like barn echoed properly as the thunder roared outside.

The rain stopped just as suddenly as it started. We watched the clouds disintegrate and then a avalanche cloud emerged that was directly above the crash site. Then to describe it, a rainbow also appeared. As the avalanche continued its journey and as the lower clouds evaporated, there was a strange, truly peculiar-looking cloud in the sky in the parks that seemed to spin.

The man took the timelapse as I was comfortable behind the camera and blinking at the cell phone announcements. It took a few minutes and the cloud began to disintegrate. The rain didn't come like a couple of drops. There was a rumble, but the direction was hard to say because it had been faintly heard in the background almost all the time.

At first I thought of the foot of the rain, but as the cloud became more visible, a variety of roundwood came to mind.



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Additional information
  • Observed storm phenomena
    • Arcus cloud info

      Vyörypilvi on ukkospilveen liittyvä hyllymäinen tai rullamainen, usein selvärajainen matalalla roikkuva pilvi. Tämän uhkaavan näköiseen pilvimuodostelman ylitykseen liittyy usein puuskainen tuuli.  

       

      Vyörypilvi. Kuva Pete Pajuheimo.

       

      Vyörypilvi. Kuva Pauli Jokinen.

       

      Vyörypilvi. Kuva Jaakko Kuivanen.

       

      Vyörypilvi. Kuva Panu Lahtinen.

       

      Vyörypilvi. Kuva Eetu Saarti.

       

      Vyörypilvi erkanee kielekkeenä ukkospilven alaosasta. Kuva Markku Siljama. 

    • Diffuse heat lightning info

      Kalevantuli on epämääräinen välähdys, josta ei kuulu jyrinää ja joka on yleensä etäällä taivaanrannan tuntumassa. Kalevantuli on maasalaman tai pilvisalaman heijastusta.

      Erotuksena kalevantuleen elosalamassa erottuu salaman viivamainen rakenne. Sekä kalevantuli että elosalama ovat molemmat salamointia, joka tapahtuu yleensä yli 20 km etäisyydellä havaitsijasta, mistä johtuen jyrinää ei kuulla.

       

      Kalevantuli valaisee kaukaista ukkospilveä. Kuva Mikko Peussa.

Technical information

Honor 20 pictures Honor 30 timelapse

Comments: 1 pcs
Eero Karvinen - 25.8.2020 at 19.44 Report this

Komea on solu. Merituulirintamalla näppinsä pelissä!

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