How autumnal high pressure brings on the dark doldrums

With no wind to disperse the low cloud, mist and fog and less sunlight to burn it off, anticyclonic gloom can set in In summer, a high-pressure system over the UK usually means fine weather.

But in the colder months it can result in anticyclonic gloom, characterised by grey skies, mist, fog and drizzle. A settled high-pressure system brings stable conditions and impedes the usual vertical movement of air. This is a…