Visibility I / V
I looked through the sky camera pictures in the morning, but found nothing but a few starbursts. But luckily Aki reported a high lightning sighting in Mikkeli, so I went to that. through the time. And you found the same flaps there!
According to the timing image, both flashed on 2014-08-05 21.48.01,246 UTC. Based on this, one good candidate can be found in the data of the Finnish Meteorological Institute: 36 kA, 56.2232 N, 19.9588 E. The distance to this comes from my own camera about 530 km in the direction of 214.8 degrees.
Was this now the first observation of two stations from Finland?