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Impressive! Was there a thunderstorm afterwards?

Great. How did you get the clouds there?
Regards
Klaus

There was no thunderstorm here, but probably under these clouds in the area of the Swabian Jura. The two clouds on the right later merged in the anvil region, unfortunately I did not photograph this.

In this weather situation, such cumulus clouds often form over the uplands, here over the Swabian Jura. The Rems Valley runs east-west, while the Swabian Jura stretches from northeast to southeast.
This "tilt" is reflected by the clouds. If I could go 250 to 300 meters higher from this vantage point, the Albtrauf could be seen over the Schurwald heights visible in the picture.

Matthias