mechanical pencils & paper hearts

sixpenceee:

Nacreous clouds, sometimes called mother-of-pearl clouds, are rare and unbelievably bright with vivid and slowly shifting iridescent colours. They are mostly visible within two hours after sunset or before dawn. 

They are seen mostly during winter at high latitudes like Scandinavia, Iceland, Alaska and Northern Canada. Sometimes, however, they occur as far south as England. They can be less rare downwind of mountain ranges. Elsewhere their appearance is often associated with severe tropospheric winds and storms. 

Nacreous clouds far outshine and have much more vivid colours than ordinary iridescent clouds which are very much poor relations and seen frequently all over the world. (Source)

(Source: sixpenceee, via sixpenceee)