In the east of the Netherlands I was seeing something similar to what you describe, but when particularly active I also saw a reddish glow in places. This is a

In the east of the Netherlands I was seeing something similar to what you describe, but when particularly active I also saw a reddish glow in places. This is a timelapse I made around the same time: https://imgur.com/a/kloWEOl https://imgur.com/a/kloWEOl