Visibility I / V
The curls promised really wild aurora borealis. After it got dark, I started to follow them and I was a little disappointed at the beginning, because the thin thin layer of clouds in the northern direction prevented proper visibility. After all, something was visible (picture 1). After midnight, however, the situation changed decisively, as the aurora borealis began to be clearly visible to the eye at the very zenith and almost to the south (picture 3, it is photographed facing east-southeast and shows Suomenlinna church tower on the left and Harmaja pilot station with lighthouses on the right). The aurora borealis was therefore more intense in the south and in the zenith than in the north, which happens very rarely in Helsinki. The color scale also included violet and blue lights.