From lava lamp-like mammatus clouds to tubular wave clouds to eye-catching roll clouds, the skies overhead rarely look like this. Lucky for us, Flickr members were in the right place at the right time to snap these incredible shots.
Check out this selection of beautiful and unusual clouds from around the world, and please share photos from your collection of incredible clouds.
Are you passionate about taking great weather photos? Join the Project Weather group on Flickr to submit your photos, and your work could be featured in the award-winning Yahoo Weather app.