Moin together
Illuminated night clouds are in the upper stratosphere. Normally air is very dry there, so clouds can not exist. In Midsummer (Northern Hemisphere June/ July) there a little more water damp in the stratosphere, so sometimes special clouds can develop in up to 80 km high. Because the sun is only a few degrees under the horizon, these stratospheric clouds are illuminated by sunlight.
It is not a continental phenomen, but north in Scandinavia it is not visible, because sun stands to high. Also in southern counrtys like Spain or Italy it is not visible, because the sun is to far below the horizon.
I found a nice picture, taken in Essex, UK
@STEMO
Thank you very much for your song of praise. You know my challenge! Be sure my rusty wreak will come to the wreaking party of your actual car
