On 19 Dec, 20:17, Graham Easterling
wrote:
SNIP

Graham, I reckon snow showers on low ground disperses fog, as does
rain *

True enough on low ground inland, but, rain doesn't disperse fog here!
Our thickest fogs come with driving drizzle and a strong to gale SW!
(I'm talking 50-100mm visibility at beach, not cliff top level) Hard
to tell where the sea ends and the sky begins.

In contrast, this sort of fog is rather nicehttp://www.easterling.freeserve.co.uk/wpage6.html
(4th, 5th & 6th photos down) It's great having a swim around, with
only the swell telling you which direction the beach is in. Can be
quite spooky in a small boat.

Graham
Penzance

50-100 metres visibilty that should be - before anyone tells me!