West Highlands MWIS for Sunday:
"...there may be a few pockets of persistent cloud, mainly cores, rarely below 750m and mostly above 1000m."
What is a core in this context?
When I Google it I mostly get computer jism, and some stuff about cold-core funnel clouds, which according to one site means "a vertically tilted rotating column of air under a rapidly growing convective cloud, but the atmospheric conditions are different than those conditions that produce typical funnel clouds or tornadoes".
Doesn't sound like a typical thing to hang around in pockets in this part of the world.