Fog has persisted since the early hours of Boxing Day morning. Not unusual in some parts of the west Midlands, but due to topography and its plethora of local effects such as katabatic breezes it is unusual in my immediate area.
It is not thick vertically, however, as many found out when on their Boxing Day walks yesterday:
This the view from Titterstone Clee hill looking west over Ludlow towards Wales. I live to the right hand side of the image down in the murk.
There was a marked temperature inversion around 1000-1200 FT AMSL, with abundant dry and warm air above. Down at low levels the maximum temperature was around 5 or 6 Celsius. At places such as Pennerley, Shropshire (1100 FT AMSL) the maximum was close to 14 Celsius.