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![washingtonpost Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::2467791.png) The Washington Post [@washingtonpost](/creator/twitter/washingtonpost) on x 19.8M followers
Created: 2025-07-02 16:01:10 UTC

As much of Europe battled a rare heat wave, beachgoers trying to cool off on the coast of Portugal were stunned by a dark, tsunami-like cloud formation, commonly referred to as a roll cloud, billowing over the ocean on Sunday.

![](https://pbs.twimg.com/media/Gu3UcZZXkAAWHo9.jpg)

XXXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1940440621270900841/c:line.svg)

**Related Topics**
[portugal](/topic/portugal)

[Post Link](https://x.com/washingtonpost/status/1940440621270900841)