At least 10 lightning strikes seen - 9.8.2021 at 23.20 - 10.8.2021 at 00.15 Järvenpää Observation number 100367

Visibility III / V

Henrik Heikkinen

The monk, which had lived for more than two hours, gleamed non-stop with a magnificent night lightning. At best, the flash density was 1 flash in 15 seconds.

I'm not sure if the cell can be sorted as a supercell, but a windstorm was already visible during the day and a supercell was found in Pietarsaari https://www.instagram.com/p/CSYgkyxDEhL/. The VRad radar showed some sort of rotational anomaly at one point for a longer period of time, but let’s classify it as some kind of error.

Nice once proper autumn lightning.

This description has been automatically translated from Finnish. Click here to see the original text.

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Additional information

Observed storm phenomena
- Diffuse heat lightning
  
  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.

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At least 10 lightning strikes seen - 9.8.2021 at 23.20 - 10.8.2021 at 00.15 Järvenpää Observation number 100367