Visibility III / V
20.3. the departed CME didn’t even offer a spectacle to watch, but luckily the corona opening became a little trickle in the sky for the following evenings - and at the height of Lake Inari it was supposed to see even something anyway.
The northern sky was still light, but in the eastern horizon the head of the northern lights arc began to stand out more than eight quarters. After a few minutes, two arches were already visible, the upper of which was dimmer. At 20:19 - 20:22 a bright attack from east to west progressed along the lower arch. From 20:30 to 20:45 the arc barely faded to stand out. Then several west-moving brightnesses appeared (pictured), which after about five minutes had developed into high rays. The arc continued to vary, dimming, brightening, and providing rays, and the dim corona was also visible at least at 9 p.m. and 9:20 p.m. A quarter of a dozen northern rays danced to dim rays up to a height of about 45 degrees. At ten to ten, the view had changed to a triple arc (pictured). It twisted into the folds that moved west. Then the arc descended closer to the horizon but remained bright, and the zenith showed a constant movement of dim curves! They moved from north to south in a continuous series, following each other every 1-3 seconds like waves. This lasted at least from 9:50 pm to 10:10 pm, maybe even longer. There was no northern fire south of them. The movement was only visible above the head, so I don’t know if it happened in other parts of the oval as well. The last picture shows the situation to the east just before I noticed this “wave effect”. I didn’t get a picture of the ripple itself to succeed.