Underneath an Anvilcloud with Mammacumulus 

A sunny day, that turned "suddenly" grey. I looked outside and saw a fascinating picture. Fascinating at least for me. A massive singular thundercloud, that is typical for hot summer weather had formed. The storm did not reach me. It rained out and collapsed still west of Vienna. But again, it was a fascinating sight to see.
And the "grapes" i mentioned, they are called "mammacumulus" So this is again not an entertaining video, but an educational! :))
Learn more every day, brave Earthlings!