Early January in Tromsø is a great time to catch some Nacreous Clouds. We saw a heap of these over the course of a week. They don't photograph very well though, as a lack of structure/texture is their nature.

These kinds of clouds are caused by sunlight over the horizon hitting high altitude clouds.

https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/clouds/other-clouds/nacreous

#Nacreous #PearlyClouds