A rare phenomenon called nacreous clouds. They are formed high up in the atmosphere, at

I live inland in Sweden and generally see them once or twice per winter, usually in late January when the Arctic air sweeps down over us. Never as much as in this photo, mostly just a cloud. Since we are at least 2 cloud freaks on FS I will see if I can get a pic next time!

Neat, you get proper winter too then I suppose

Well not so far... First snow (a dusting) last night. Stay posted!