Rare Roll Cloud in Portugal
July 9 , 2025
16 hrs 0 min
56
- A rare roll cloud was spotted over a beach in Portugal during a heatwave.
- This tube-shaped cloud appeared to roll horizontally like a giant wave.
- It is a low, horizontal, and relatively rare type of arcus cloud.
- Roll clouds form when cool air meets warm, moist air near the coast.
- They can be accompanied by sudden gusts, minor turbulence, or shifting weather conditions.
- The roll clouds do not indicate any natural disaster or tsunami risk.

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