From time to time it's important to give back to the community. After all, it's only fair to return the favor - we download, we view, we read articles, tutorials for free thanks to the great and almighty Internet. The resources are infinite and for that commitment, it seems nice to share back, to be part of that community.
You can test the animation yourselves. Any sort of constructive feedback is much welcomed and appreciated.
I know it's not perfect and it still needs refinement, but this is just the beginning. Feel free to edit, correct or improve it in any way possible. Let your imagination loose! You can view the dedicated Pen on Codepen or check out this Gist on Github.
PS: From what I tested so far, the best performance I had was on Firefox. On Chrome it displays a little flicker at the end of the cloud animations. On the other hand, Safari displays the cloud animation horizontally. On Opera the flickering reappears and on Internet Explorer... well it works and it doesn't - no comment.
LATER-EDIT: I made a workaround and managed to solve the flicker in Chrome. So I recommend you give it a try on Chrome and Firefox.
LATER-EDIT: Thanks to my dear buddy, Eddie, I managed to solve an issue on Chrome. Now the animations can run locally.