Shelf Clouds – BBC News Weather Watchers – 3 Photos

[Laurence Green]

From the BBC’s Weather Watchers website come three nice photo of Shelf Clouds.

https://www.bbc.co.uk/weatherwatchers/article/39894978/gallery-shelf-clouds

I think, and I stand to be corrected on this, the name Shelf Cloud is another term for Roll Cloud.

Whatever, just enjoy.

Laurence

[Howard Brown]

Yep, enjoyable, Laurence, thanks.

But the CAS gospel (Handbook) gives arcus (p53) as the pertinent supplementary feature; arcus protuding forward becomes shelf; more rarely arcus separating becomes roll (p53) – most roll clouds are types of arcus (p67).

[Author]

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