Cloud classification formation/classification query

[Graham Easterling]

This photo is off Land's End, sadly not mine

There was sea fog around the Lands End penisula, which you can see in the middle distance. The roll cloud was generated by the onset of a north coast sea breeze. The photo is at Lands End itself, looking west, the cloud rolling from right to left & marking the sea breeze onset. I've seen other similar, less dramatic, examples.

Is this similar to (or indeed an example of) stratocumulus volutus? The term sea fog just doesn't do it justice.

Graham

Penzance

[Len]

Has to be rotating about horizontal axis to be volutus.

Was it strictly a bore or roll cloud? These are usually elevated.

We get similar sea fog brought in by a sea breeze onto the headlands of Plymouth Sound.

Here is an example. Not my photo.

Len

Wembury

[Graham Easterling]

I think your photo shows something slightly different Len. Looking at the flags  the breeze is running up the Tamar estuary, so the fog is aligned with the wind. In the case I showed it's lying across the wind, and rolled forward by the sea breeze onset. It was brought to my attention by John Chappell who was at Lands End.

The cloud wasn't elevated, if it was I would have classified it as volutus. Also, volutus is supposed to be rare. The photo I posted was an exceptional example of a typical roll of fog marking an advancing sea breeze front over the sea. If there isn't a specific name for it there should be!

There are so many sea /coastal fog varieties, but none seem to have 'official' names unlike other clouds. 

Next 2 photos of low tide warm sand fog, for want of a better name,  are mine.

 I've known this suddenly appear and get too thick to see the sea

Looking along the beach at Daymer Bay. This type of beach fog doesn't lower the temperature like a true sea fog or sea breeze onset.

Graham

mizzly Penzance