See private message 
Also tried out the 4.2 build for 4.18 But it still seems to have some problems (or I don’t understand it). For example, I no longer see keyframes for 3d clouds.
I also read article:
https://80.lv/articles/-making-skies-alive/
And is what I want to create:
“you can have a clear sky overhead, but a gathering storm in the distance. But more than that, you see that storm building as you approach it, seamlessly transitioning from one state to the other.”
Only I don’t move but the weather does move.