Heres one that might help…
https://www.metoffice.gov.uk/binaries/content/gallery/mohippo/images/migrated-image/2/avgrain1.jpg
Not cloud as such, but associated…
British Astronomical Association
Supporting amateur astronomers since 1890
Supporting amateur astronomers since 1890
Heres one that might help…
https://www.metoffice.gov.uk/binaries/content/gallery/mohippo/images/migrated-image/2/avgrain1.jpg
Not cloud as such, but associated…